High-temperature gas purification system and mobile graphitization industrial system

Abstract

The invention belongs to the field of graphitization, and provides a high-temperature gas purification system suitable for a movable graphitization furnace and a movable graphitization industrial system. The high-temperature gas purification system comprises a graphitization power transmission and gas supply closed station, the graphitization power transmission and gas supply closed station is provided with a closed space, and only one smoke outlet of the closed space is connected with a smoke treatment device; the movable graphitization furnace platform car is suitable for transferring the movable graphitization furnace into the closed space of the graphitization power transmission and gas supply closed station; the flue gas treatment device is communicated with the flue gas outlet, and the flue gas treatment device is suitable for purifying all flue gas generated in the closed space; and when the movable graphitization furnace is located at the graphitization power transmission and gas supply closed station, the metering gas supply system is suitable for conveying purified gas into the movable graphitization furnace.

Description

Technical Field

[0001] This application mainly relates to the field of graphitization, and in particular to a high-temperature gas purification system and a mobile graphitization industrial system. Background Technology

[0002] High-purity graphite materials better utilize their inherent properties, leading to wider applications. Large-scale industrial production primarily utilizes high-temperature gas purification. High-temperature graphitization purification involves heating the product in a graphitization furnace to 2350°C, then introducing chlorine, Freon, and nitrogen into the furnace. This decomposes and vaporizes the non-carbonaceous substances within the product before venting it from the furnace, achieving the goal of graphite material purification. However, during this high-temperature purification process, large amounts of chlorine, Freon, and halogen compounds are not effectively collected and treated, polluting the environment, the atmosphere, and even directly harming personnel. Summary of the Invention

[0003] The technical problem to be solved by this application is to provide a high-temperature gas purification system and a mobile graphitization industrial system, so that gas purification in the graphitization production process is safe and feasible.

[0004] To address the aforementioned technical problems, this application provides a high-temperature gas purification system suitable for a mobile graphitization furnace. The high-temperature gas purification system includes: a graphitization power supply and gas supply sealed station, the graphitization power supply and gas supply sealed station having a sealed space, the sealed space having only one smoke outlet connected to a flue gas treatment device; a mobile graphitization furnace platform vehicle, the mobile graphitization furnace platform vehicle being adapted to transfer the mobile graphitization furnace to the sealed space of the graphitization power supply and gas supply sealed station; a flue gas treatment device, connected to the smoke outlet, the flue gas treatment device being adapted to purify all flue gas generated within the sealed space; and a metering gas supply system, when the mobile graphitization furnace is located at the graphitization power supply and gas supply sealed station, the metering gas supply system being adapted to supply purified gas to the mobile graphitization furnace.

[0005] Optionally, the mobile graphitization furnace platform vehicle includes a platform and a wheel assembly. The platform is adapted to be raised and lowered hydraulically, and the wheel assembly is adapted to be rotated hydraulically to change the direction of travel of the mobile graphitization furnace platform vehicle.

[0006] Optionally, the flue gas treatment device is adapted to discharge all the flue gas generated in the enclosed space from the flue gas outlet and to perform harmless treatment on the flue gas.

[0007] Optionally, the flue gas treatment device includes a flue gas collection pipe, a flue gas fan, and a flue gas harmful substance absorption and treatment tower, wherein the flue gas collection pipe is connected to the flue gas outlet, the flue gas fan is adapted to transport the waste gas collected through the flue gas collection pipe to the flue gas harmful substance absorption and treatment tower, and the flue gas harmful substance absorption and treatment tower is adapted to perform harmless treatment on the flue gas.

[0008] Optionally, the metering gas supply system is configured to vaporize liquid chlorine and liquid Freon to form the purified gas.

[0009] Optionally, the metering gas supply system is also configured to supply nitrogen to the mobile graphitization furnace.

[0010] Optionally, the system further includes a sealed gas guide pipe, one end of which is connected to the furnace body space of the movable graphitization furnace, and the other end is connected to the gas supply output terminal of the metering gas supply system, which is adapted to output the purified gas through the gas supply output terminal.

[0011] Optionally, the metering gas supply system is located in the sealed space of the graphitized power and gas supply sealed workstation.

[0012] Another aspect of this application proposes a mobile graphitization industrial system, comprising: a mobile graphitization furnace; and a high-temperature gas purification system as described in any embodiment of this application.

[0013] Optionally, the movable graphitization furnace has a steel furnace shell.

[0014] Compared with the prior art, this application has the following advantages: By setting up a closed station for graphitization power supply and gas supply with a closed space, combined with the high flexibility of mobile graphitization production, this application can realize the effective and reliable purification operation of high temperature gas in the graphitization production process, making graphitization production safer and more environmentally friendly. Attached Figure Description

[0015] The accompanying drawings are included to provide a further understanding of the present application. They are incorporated into and constitute a part of this application. The accompanying drawings illustrate embodiments of the present application and, together with this specification, serve to explain the principles of the present application. In the accompanying drawings:

[0016] Figure 1 This is a system block diagram of a high-temperature gas purification system applicable to a mobile graphitization furnace according to an embodiment of this application;

[0017] Figure 2 Is it like this? Figure 1 A schematic diagram of one specific implementation of the high-temperature gas purification system shown;

[0018] Figure 3Is it like this? Figure 2 A front view of the movable graphitization furnace in the illustrated embodiment;

[0019] Figure 4 Is it like this? Figure 2 A cross-sectional view of the movable graphitization furnace in the illustrated embodiment from a frontal perspective; and

[0020] Figure 5 Is it like this? Figure 2 A top view of the movable graphitization furnace in the illustrated embodiment. Detailed Implementation

[0021] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are merely some examples or embodiments of this application. For those skilled in the art, these drawings can be applied to other similar scenarios without creative effort. Unless obvious from the context or otherwise specified, the same reference numerals in the drawings represent the same structures or operations.

[0022] As indicated in this application and claims, unless the context clearly indicates otherwise, the words "a," "an," "an," and / or "the" are not specifically singular and may include plural forms. Generally speaking, the terms "comprising" and "including" only indicate the inclusion of explicitly identified steps and elements, which do not constitute an exclusive list, and the method or apparatus may also include other steps or elements.

[0023] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this application. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0024] In the description of this application, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is usually based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this application and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this application; the directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0025] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0026] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, these terms have no special meaning and therefore should not be construed as limiting the scope of protection of this application. In addition, although the terminology used in this application is selected from commonly known and used terms, some terms mentioned in this application's specification may have been chosen by the applicant according to his or her judgment, and their detailed meanings are explained in the relevant sections of this description. Moreover, this application should be understood not only through the actual terms used, but also through the meaning implied by each term.

[0027] It should be understood that when a component is referred to as "on another component," "connected to another component," "coupled to another component," or "in contact with another component," it can be directly on, connected to, coupled to, or in contact with that other component, or there may be an intervening component. In contrast, when a component is referred to as "directly on another component," "directly connected to," "directly coupled to," or "directly in contact with" another component, there is no intervening component. Similarly, when a first component is referred to as "electrically contacting" or "electrically coupled to" a second component, there is an electrical path between the first and second components that allows current to flow. This electrical path may include capacitors, coupled inductors, and / or other components that allow current to flow, even if there is no direct contact between the conductive components.

[0028] This application refers to Figure 1 A high-temperature gas purification system 10 (hereinafter referred to as "high-temperature gas purification system 10") suitable for a mobile graphitization furnace is proposed. In this embodiment, the high-temperature gas purification system 10 is a system for purifying graphite production materials using halogen gas at high temperatures. Specifically, according to... Figure 1 The high-temperature gas purification system 10 includes a graphitization power supply and gas supply sealed station 11, a mobile graphitization furnace platform vehicle 12, a flue gas treatment device 13, and a metering gas supply system 14. More specifically, Figure 2 A specific implementation of the high-temperature gas purification system 10 is shown, wherein the graphitization power supply and gas supply sealed station 11 has a sealed space 110, and the sealed space 110 has only one smoke outlet 111, through which the sealed space 110 is connected to the flue gas treatment device 13. Further, as... Figure 1 The mobile graphitization furnace platform vehicle 12 shown is adapted to transfer the mobile graphitization furnace 100 to the enclosed space 110 of the graphitization power supply and gas supply sealed station 11. The flue gas treatment device 13 is connected to the flue gas outlet 111 of the enclosed space 110, and is adapted to purify all flue gas (including toxic gases) generated within the enclosed space 110. Finally, when the mobile graphitization furnace 100 is located in the graphitization power supply and gas supply sealed station 11, the metering gas supply system 14 is adapted to supply purified gas to the mobile graphitization furnace 100, thereby completing the high-temperature gas purification operation during the production process of the mobile graphitization furnace 100.

[0029] Specifically, in this embodiment, the mobile graphitization furnace platform 12 includes a platform and a wheel assembly. The platform is adapted to be raised and lowered hydraulically, and the wheel assembly is adapted to be rotated hydraulically to change the direction of travel of the mobile graphitization furnace platform 12. This allows the mobile graphitization furnace platform 12 to conveniently and quickly transport the mobile graphitization furnace 100 to a designated location.

[0030] Furthermore, the flue gas treatment device 13 is adapted to discharge all flue gas generated in the enclosed space 110 of the graphitization power supply and gas supply closed station 11 from the flue gas outlet 111, and to perform harmless treatment on the flue gas. See details below. Figure 2 The flue gas treatment device 13 includes a flue gas collection pipe 131, a flue gas fan 132, and a flue gas harmful substance absorption and treatment tower 133. The flue gas collection pipe 131 is connected to the flue gas outlet 111. The flue gas fan 132 is adapted to transport the waste gas collected through the flue gas collection pipe 131 to the flue gas harmful substance absorption and treatment tower 133. The flue gas harmful substance absorption and treatment tower 133 is adapted to perform the above-mentioned harmless treatment on the flue gas. Specifically, it absorbs all the unreacted halogen gases, halogen compounds, and other harmful substances (sulfur, nitrogen, heavy metals, etc.) emitted from the graphite material in the flue gas and performs harmless treatment, thereby making the graphitization production safer and more environmentally friendly.

[0031] On the other hand, the metering gas supply system 14 is configured to vaporize liquid chlorine and liquid Freon to form purified gas. The metering gas supply system 14 is also configured to supply nitrogen to the movable graphitization furnace 100. According to... Figure 2 The high-temperature gas purification system 10 preferably includes a sealed gas guide pipe 140. One end of the sealed gas guide pipe 140 is connected to the furnace body space of the movable graphitization furnace 100, and the other end is connected to the gas supply output terminal 141 of the metering gas supply system 14. The metering gas supply system 14 is adapted to output purified gas through the gas supply output terminal 141. In this embodiment, preferably, the metering gas supply system 14 and the movable graphitization furnace 100 are both located in the sealed space 110 of the graphitization power supply and gas supply sealed station 11. See details below. Figure 2 The bold black lines indicate the approximate boundary of the enclosed space 110. By arranging the metering gas supply system 14 for providing purified gas and the mobile graphitization furnace 100 in the same enclosed space 110, the risk of gas leakage during transmission can be further avoided. All the flue gas in the graphitization production process can be completely introduced into the flue gas treatment device 13 through a single flue gas outlet 111, thereby completing the high-temperature gas purification operation in the graphitization production process more safely and reliably.

[0032] To better understand the high-temperature gas purification system 10, please refer to the following... Figures 3-5 Further explanation of the structural details of the movable graphitization furnace 100. First, according to... Figure 3 The portable graphitization furnace 100 contains a furnace-loaded product 101 during the production process, which generates a large amount of flue gas, including toxic gases, during high-temperature preparation. The portable graphitization furnace 100 has a steel structure furnace shell 103, which is lightweight. This, combined with high-temperature resistant and lightweight furnace walls 102, facilitates the movement of the portable graphitization furnace 100. Further integration... Figure 4and Figure 5 , Figure 4 and Figure 5 Both show the furnace head electrode 104 of the movable graphitization furnace 100. Specifically, according to... Figure 4 The sealed gas guide pipe 140 is positioned close to the product 101 loaded into the furnace, which allows for convenient and timely input of purified gas into the furnace space during the production process, thus ensuring production safety.

[0033] The following is a brief introduction to the operation and implementation process of the high-temperature gas purification system 10:

[0034] 1) The mobile graphitization furnace 100, loaded with the furnace product 101, is transported to the graphitization power supply and gas supply sealed station 11 by the mobile graphitization furnace platform vehicle 12.

[0035] 2) Connect the furnace head electrode 104 of the movable graphitization furnace 100 to the power output conductive bus of the transformer, and supply power to the movable graphitization furnace 100 to raise its temperature.

[0036] 3) When the temperature inside the furnace reaches the temperature required for graphitization, the movable graphitization furnace 100 is powered on and kept warm. At the same time, purified gas is introduced into the furnace through the metering gas supply system 14. After being vaporized, liquid chlorine and liquid Freon are introduced into the movable graphitization furnace 100 through the sealed gas pipe 140. During the gas supply process, the movable graphitization furnace is powered on and kept warm.

[0037] 4) After the purification gas is supplied, continue to supply a certain amount of nitrogen into the furnace to remove ash residues in the product and achieve the purpose of product purification.

[0038] 5) During the entire process, when the graphitization furnace starts to generate flue gas, the flue gas treatment device 13 is turned on to collect and treat the flue gas.

[0039] Another aspect of this application proposes a mobile graphitization industrial system, including a mobile graphitization furnace and a high-temperature gas purification system as described in any embodiment of this application, such as... Figure 1 and Figure 2 The high-temperature gas purification system 10 is shown. Other information regarding mobile graphitization industrial systems can be found above and will not be repeated here.

[0040] In summary, during high-temperature ventilated graphitization production, a large amount of halogen gases and halogen compounds remain in the exhaust gas from the gas supply station, gas pipelines, and furnace. All of these must be collected and treated; otherwise, the safety and environmental impacts and potential hazards will be enormous. Existing high-temperature purification graphitization methods involve adding a gas supply purification unit to a traditional graphitization system, resulting in difficulties in flue gas collection and significant safety and environmental risks. This application proposes a mobile graphitization furnace production station with a separate, sealed space for power and gas supply. The gas supply station is located on the side, allowing for complete collection and treatment of the flue gas, achieving zero emissions. Furthermore, the power supply transformer is located on the other side of the workstation, achieving the shortest possible power supply distance and minimizing power consumption in the conductive lines. Mobile high-temperature ventilation purification graphitization involves raising the furnace temperature to over 2350℃, which poses a safety hazard due to the high-temperature furnace. Mobile high-temperature ventilation purification graphitization places the high-temperature graphitization furnace in a specially designed sealed space. There are no personnel or important equipment in the space. Necessary equipment is protected, and a pressure relief device is installed at the top of the space to minimize the damage caused by uncontrollable safety accidents.

[0041] The basic concepts have been described above. Obviously, for those skilled in the art, the above disclosure is merely illustrative and does not constitute a limitation of this application. Although not explicitly stated herein, those skilled in the art may make various modifications, improvements, and corrections to this application. Such modifications, improvements, and corrections are suggested in this application, and therefore remain within the spirit and scope of the exemplary embodiments of this application.

[0042] Furthermore, this application uses specific terms to describe embodiments of the application. For example, "an embodiment," "one embodiment," and / or "some embodiments" refer to a particular feature, structure, or characteristic related to at least one embodiment of the application. Therefore, it should be emphasized and noted that "an embodiment," "one embodiment," or "an alternative embodiment" mentioned twice or more in different locations in this specification do not necessarily refer to the same embodiment. In addition, certain features, structures, or characteristics in one or more embodiments of the application can be appropriately combined.

[0043] Similarly, it should be noted that, in order to simplify the description of the present application and thus aid in the understanding of one or more embodiments, the foregoing description of the embodiments of the present application sometimes combines multiple features into a single embodiment, drawing, or description thereof. However, this disclosure method does not imply that the subject matter of the present application requires more features than those mentioned in the claims. In fact, the embodiments contain fewer features than all the features of the single embodiments disclosed above.

[0044] In some embodiments, numbers are used to describe the quantity of components and attributes. It should be understood that such numbers used in the description of the embodiments are modified by the modifiers "about", "approximately" or "substantially" in some examples. Unless otherwise stated, "about", "approximately" or "substantially" indicate that the numbers are allowed to vary by ±20%. Accordingly, in some embodiments, the numerical parameters used in the description and claims are approximate values, which may change according to the required features of individual embodiments. In some embodiments, the numerical parameters should take into account the specified significant digits and adopt the general method of retaining digits. Although the numerical domains and parameters used to confirm the breadth of their range in some embodiments of the present application are approximate values, in specific embodiments, the settings of such numerical values ​​are as accurate as possible within the feasible range.

[0045] Although this application has been described with reference to specific embodiments, those skilled in the art should recognize that the above embodiments are only used to illustrate this application, and various equivalent changes or substitutions can be made without departing from the spirit of this application. Therefore, any changes or modifications to the above embodiments within the essential spirit of this application will fall within the scope of the claims of this application.

Claims

1. A high-temperature gas purification system suitable for a mobile graphitization furnace, characterized in that, The high-temperature gas purification system includes: A graphitization power supply and gas supply sealed station, wherein the graphitization power supply and gas supply sealed station has a sealed space, and the sealed space has only one smoke outlet connected to the flue gas treatment device. A mobile graphitization furnace platform vehicle, which is adapted to transfer the mobile graphitization furnace to the sealed space of the graphitization power supply and gas supply sealed workstation. The flue gas treatment device is connected to the flue gas outlet and is adapted to purify all the flue gas generated in the enclosed space. A metering gas supply system is provided when the movable graphitization furnace is located in the closed power supply and gas supply station of the graphitization furnace. The metering gas supply system is adapted to supply purified gas to the movable graphitization furnace.

2. The high-temperature gas purification system as described in claim 1, characterized in that, The mobile graphitization furnace platform vehicle includes a platform and a wheel assembly. The platform is adapted to be raised and lowered hydraulically, and the wheel assembly is adapted to be rotated hydraulically to change the direction of travel of the mobile graphitization furnace platform vehicle.

3. The high-temperature gas purification system as described in claim 1, characterized in that, The flue gas treatment device is adapted to export all the flue gas generated in the enclosed space from the flue gas outlet and to treat the flue gas in a harmless manner.

4. The high-temperature gas purification system as described in claim 3, characterized in that, The flue gas treatment device includes a flue gas collection pipe, a flue gas fan, and a flue gas hazardous substance absorption and treatment tower. The flue gas collection pipe is connected to the flue gas outlet, and the flue gas fan is adapted to transport the waste gas collected through the flue gas collection pipe to the flue gas hazardous substance absorption and treatment tower. The flue gas hazardous substance absorption and treatment tower is adapted to perform harmless treatment on the flue gas.

5. The high-temperature gas purification system according to any one of claims 1 to 4, characterized in that, The metering gas supply system is configured to vaporize liquid chlorine and liquid Freon to form the purified gas.

6. The high-temperature gas purification system as described in claim 5, characterized in that, The metering gas supply system is also configured to supply nitrogen to the mobile graphitization furnace.

7. The high-temperature gas purification system as described in claim 5, characterized in that, It also includes a sealed gas guide pipe, one end of which is connected to the furnace body space of the movable graphitization furnace, and the other end is connected to the gas supply output end of the metering gas supply system, which is adapted to output the purified gas through the gas supply output end.

8. The high-temperature gas purification system as described in claim 5, characterized in that, The metering gas supply system is located in the sealed space of the graphitized power and gas supply sealed workstation.

9. A mobile graphitization industrial system, characterized in that, include: Portable graphitization furnace; as well as The high-temperature gas purification system as described in any one of claims 1 to 8.

10. The mobile graphitization industrial system as described in claim 9, characterized in that, The movable graphitization furnace has a steel structure furnace shell.

Images