Carbon paper solvent preparation system and carbon paper pulping production line

Abstract

The utility model relates to the technical field of carbon paper, in particular to a solvent preparation system for carbon paper and a pulping production line.The solvent preparation system for the carbon paper comprises a water supply device, an alcohol supply device and multiple sets of preparation devices, each preparation device comprises a stirring cylinder and a feeding mechanism, each stirring cylinder comprises a water injection opening, an alcohol injection opening and a material injection opening, and the water supply device communicates with the water injection openings; the alcohol supply device is communicated with the alcohol injection ports, the material supply mechanism is correspondingly communicated with the material injection ports, and each group of preparation devices is used for preparing one solvent. The device is provided with multiple sets of preparation devices, different components are stirred respectively, it is ensured that each component is dispersed and dissolved under the optimal stirring condition, the problem that multiple components interfere with one another during mixing and stirring is avoided, and the uniformity of slurry is improved; each component is stirred under the optimal condition, so that the stirring time is shortened, and the pulping efficiency is improved; each solvent is independently prepared, so that the proportion of different components can be conveniently adjusted in slurry preparation, the formula is flexibly adjusted, and the requirements of different application scenes of the carbon paper are met.

Description

A solvent preparation system for carbon paper and a pulping production line for carbon paper. Technical Field

[0001] This application relates to the field of carbon paper technology, specifically providing a solvent preparation system for carbon paper and a pulping production line for carbon paper. Background Technology

[0002] Carbon paper is an important component of hydrogen fuel cells, playing a role in transferring water vapor, electrons, and heat. The preparation of carbon paper is characterized by numerous and complex processes.

[0003] Carbon paper preparation is divided into two methods: dry preparation and wet preparation. The first step in wet preparation is to prepare carbon fiber slurry. Traditional slurry preparation involves mixing raw materials such as chopped carbon fibers, water, organic solvents, dispersants, and binders in a mixing tank according to a formula. Since the optimal temperature, speed, and time for dissolving and dispersing each component are different, mixing them together inevitably leads to problems such as long mixing time, poor slurry uniformity, and low pulping efficiency. Summary of the Invention

[0004] The purpose of this application is to provide a solvent preparation system and pulping production line for carbon paper, which solves the problems of long stirring time, poor pulp uniformity, and low pulping efficiency caused by mixing raw materials of various components together.

[0005] To address the aforementioned technical problems, this application provides a solvent preparation system for carbon paper, comprising:

[0006] Water supply device for providing deionized water;

[0007] An alcohol supply device for supplying organic alcohol solutions;

[0008] Multiple sets of preparation devices are provided, each including a stirring tank and a feeding mechanism for providing raw materials. The stirring tank includes a water inlet, an alcohol inlet, and a material inlet. The water supply device is connected to each of the water inlets, the alcohol supply device is connected to each of the alcohol inlets, and the feeding mechanism is connected to the material inlets. Each set of preparation devices is used to prepare a solvent.

[0009] The solvent preparation system for carbon paper in this application solves the problems of long mixing time, poor pulp uniformity, and low pulping efficiency in traditional processes by adopting a split-type independent preparation design. Specifically, the system has multiple independently controllable preparation devices, with different components being stirred in different preparation devices. This ensures that each component is dispersed and dissolved under its optimal stirring conditions. For example, the stirring temperature, speed, and time are optimized for different components such as dispersants and binders, avoiding the problem of mutual interference when mixing multiple components in traditional processes. This significantly improves the uniformity of the pulp, which is beneficial to the subsequent molding and processing of carbon paper and improves the quality of carbon paper. Since each component is stirred under its optimal conditions and each preparation device can operate simultaneously, parallel preparation can be achieved, which can greatly shorten the stirring time, improve pulping efficiency, and reduce energy consumption and cost. Since each solvent can be prepared separately, it is easier to adjust the proportion and amount of different components in the subsequent pulp preparation to flexibly adjust the formula and meet the needs of different application scenarios of carbon paper.

[0010] Optionally, the stirring tank has a first liquid outlet, and the preparation apparatus further includes:

[0011] A storage container having a first liquid inlet and a first liquid outlet connected to the first liquid inlet.

[0012] Optionally, the storage container has a second outlet, and the preparation apparatus further includes:

[0013] A metering container having a second inlet and a second outlet connected to the second inlet.

[0014] Optionally, the water supply device includes:

[0015] A water bucket for storing the deionized water;

[0016] The water supply pipeline includes a main water supply pipeline and multiple branch water supply pipelines connected to the main water supply pipeline. The main water supply pipeline is connected to the water tank, and the multiple branch water supply pipelines are connected to the multiple water inlets respectively.

[0017] The fourth pump and the fourth valve are both connected to the main water supply line;

[0018] Multiple fifth valves are connected to the corresponding water supply branch pipes.

[0019] Optionally, the alcohol supply device includes:

[0020] An alcohol tank, used to store the organic alcohol solution;

[0021] The alcohol supply pipeline includes a main alcohol supply pipeline and multiple branch alcohol supply pipelines connected to the main alcohol supply pipeline. The main alcohol supply pipeline is connected to the alcohol tank, and the multiple branch alcohol supply pipelines are connected to multiple alcohol inlets respectively.

[0022] The fifth pump and the sixth valve are both connected to the main alcohol supply line;

[0023] Multiple seventh valves are connected to the corresponding alcohol supply branch lines.

[0024] This application also provides a carbon paper pulping production line, including the aforementioned carbon paper solvent preparation system.

[0025] The carbon paper pulping production line of this application includes the aforementioned carbon paper solvent preparation system, and therefore has the same technical effects as the aforementioned carbon paper solvent preparation system, which will not be repeated here.

[0026] Optionally, the preparation apparatus has a first solvent outlet, and the carbon paper pulping line further includes:

[0027] A solvent tank includes a water inlet, an alcohol inlet, a solvent inlet, and a second solvent outlet. The solvent tank has a stirrer inside. A water supply device is connected to the water inlet, and an alcohol supply device is connected to the alcohol inlet. Each of the first solvent outlets can be connected to the solvent inlet.

[0028] At least one feed cylinder and at least one feeding mechanism for providing carbon fiber, the feed cylinder including a solvent inlet and a feed port, the feed cylinder having a mixer inside, a second solvent outlet communicating with the solvent inlet, and the feeding mechanism communicating with the feed port.

[0029] Optionally, the feed cylinder includes a waste liquid inlet, and the carbon paper pulping production line further includes:

[0030] A waste liquid storage container is used to store the waste liquid generated during the preparation of the carbon paper. The waste liquid storage container has a first waste liquid outlet, which is connected to the waste liquid filling port.

[0031] Optionally, the waste liquid storage container is equipped with a stirrer inside.

[0032] Optionally, the waste liquid storage container has a first waste liquid inlet, and the carbon paper pulping production line further includes:

[0033] A backup storage container is provided for storing the waste liquid. The backup storage container has a second waste liquid inlet and a second waste liquid outlet. The first waste liquid outlet and the second waste liquid inlet are connected, and the second waste liquid outlet and the first waste liquid inlet are connected. Attached Figure Description

[0034] Figure 1 is a simplified structural diagram of a specific embodiment of the solvent preparation system for carbon paper provided in this application;

[0035] Figure 2 is a simplified structural diagram of a specific embodiment of the carbon paper pulping production line provided in this application;

[0036] The reference numerals in Figures 1 and 2 are as follows:

[0037] 1-Water supply device;

[0038] 11-Water bucket; 11-1-Fourth liquid outlet; 11-2-Water inlet;

[0039] 12-Water supply pipeline; 121-Main water supply pipeline; 122-Branch water supply pipeline;

[0040] 13-Fourth pump; 14-Fourth valve; 15-Fifth valve;

[0041] 2-Methanol supply unit;

[0042] 2-1-Alcohol tank; 2-1-1-Fifth liquid outlet; 2-1-2-Alcohol inlet;

[0043] 2-2-Methanol supply pipeline; 2-2-1-Methanol supply main pipeline; 2-2-2-Methanol supply branch pipeline;

[0044] 2-3-Fifth pump; 2-4-Sixth valve; 2-5-Seventh valve;

[0045] 3-Preparation apparatus;

[0046] 31-Agitator; 31-1-Water inlet; 31-2-Alcohol inlet; 31-3-Material inlet; 31-4-First liquid outlet;

[0047] 32-Feeding mechanism;

[0048] 33-Storage container; 33-1-First liquid inlet; 33-2-Second liquid outlet;

[0049] 34-First connecting pipeline; 35-First valve; 36-First pump;

[0050] 37-Metering container; 37-1-Second inlet; 37-2-Third outlet;

[0051] 38-Second connecting pipe; 39-Second valve; 310-Second pump;

[0052] 311 - Third connecting pipe; 312 - Third valve; 313 - Third pump;

[0053] 314 - Mobile cart;

[0054] 3A - Mixer; 3B - Filter; 3C - Liquid Level Sensor; 3D - Liquid Flow Meter;

[0055] 4-Solvent tank; 41-Water inlet to solvent tank; 42-Alcohol inlet to solvent tank; 43-Solvent inlet; 44-Second solvent outlet;

[0056] 5-Material tank; 51-Solvent inlet; 52-Material inlet; 53-Waste liquid inlet; 54-Material tank water inlet; 55-Material tank alcohol inlet; 56-Material outlet;

[0057] 6-Feeding mechanism;

[0058] 7-First connecting pipeline; 71-First main pipeline; 72-First branch pipeline;

[0059] 8 - Sixth pump; 9 - Eighth valve; 10 - Ninth valve;

[0060] 11-Waste liquid storage container; 111-First waste liquid outlet; 112-First waste liquid inlet;

[0061] 12-Second connecting pipe; 121-Second main pipe; 122-Second branch pipe; 123-Third branch pipe;

[0062] 13-Seventh pump; 14-Tenth valve;

[0063] 15-Spare storage container; 151-Second waste liquid inlet; 152-Second waste liquid outlet;

[0064] 16 - Eleventh Valve;

[0065] 17-Third connecting pipe; 18-Twelfth valve; 19-Eighth pump;

[0066] 20 - Water pipe; 201 - First branch water pipe; 202 - Second branch water pipe; 21 - Thirteenth valve;

[0067] 22-Alcohol line; 221-First branch alcohol line; 222-Second branch alcohol line; 23-Fourteenth valve;

[0068] 24 - Fifteenth valve; 25 - Sixteenth valve;

[0069] 26-Slurry conveying pipeline; 261-Main conveying pipeline; 262-Branch conveying pipeline;

[0070] 27 - Ninth pump; 28 - Seventeenth valve. Detailed Implementation

[0071] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0072] The terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and the number of objects is not limited; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0073] It should be understood that the phrase "some embodiments" throughout the specification means that a specific feature, structure, or characteristic related to an embodiment is included in at least one embodiment of this application. Therefore, "some embodiments" appearing throughout the specification does not necessarily refer to the same embodiment. Furthermore, these specific features, structures, or characteristics can be combined in any suitable manner in one or more embodiments.

[0074] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0075] Please refer to Figure 1, which is a simplified structural diagram of a specific embodiment of the solvent preparation system for carbon paper provided in this application.

[0076] This application provides a solvent preparation system for carbon paper, comprising:

[0077] Water supply device 1 is used to provide deionized water;

[0078] Alcohol supply device 2 is used to supply organic alcohol solution;

[0079] Multiple sets of preparation devices 3, each preparation device 3 includes a stirring tank 31 and a feeding mechanism 32 for providing raw materials. The stirring tank 31 includes a water inlet 31-1, an alcohol inlet 31-2 and a material inlet 31-3. The water supply device 1 is connected to each water inlet 31-1, the alcohol supply device 2 is connected to each alcohol inlet 31-2, and the feeding mechanism 32 is connected to the material inlet 31-3. Each set of preparation devices 3 is used to prepare a solvent.

[0080] The solvent preparation system for carbon paper provided in this application addresses the problems of long mixing time, poor pulp uniformity, and low pulping efficiency in traditional processes through a separate, independent preparation design. Specifically, the system has multiple independently adjustable preparation devices 3, with different components stirred in different preparation devices 3. This ensures that each component is dispersed and dissolved under its optimal stirring conditions. For example, the stirring temperature, speed, and time can be optimized for different components such as dispersants and binders, avoiding mutual interference during mixing of multiple components in traditional processes. This significantly improves the uniformity of the pulp, which is beneficial for subsequent carbon paper forming and processing, thus improving the quality of the carbon paper. Since each component is stirred under its optimal conditions, and each preparation device 3 can operate simultaneously, parallel preparation can be achieved, which can greatly shorten the stirring time, improve pulping efficiency, and reduce energy consumption and cost. Because each solvent can be prepared separately, it is easier to adjust the proportion and amount of different components in the subsequent pulp preparation, so as to flexibly adjust the formula and meet the needs of different application scenarios of carbon paper.

[0081] The feeding mechanism 32 is used to provide the raw materials for each component. The raw materials for each component are usually in powder form. By mixing and stirring the raw materials of each component, deionized water, and organic alcohol solution, the solvents for each component can be obtained independently. The feeding mechanism 32 is prior art well known to those skilled in the art and will not be described in detail here.

[0082] Since each set of preparation devices 3 is used to prepare one type of solvent, the number of preparation devices 3 in the solvent preparation system is equal to the number of types of components in the slurry. Figure 1 shows three sets of preparation devices 3.

[0083] As shown in Figure 1, the stirring tank 31 includes a stirrer 3A located inside the tank. When preparing the solvent of each component, the stirrer 3A can play a stirring role, so that the raw materials, deionized water and organic alcohol solution of each component can be mixed evenly, ensuring the uniformity and stability of the solvent.

[0084] Please continue to refer to Figure 1. In some embodiments of this application, the stirring tank 31 has a first liquid outlet 31-4, and the preparation device 3 further includes:

[0085] The storage container 33 has a first liquid inlet 33-1, and the first liquid outlet 31-4 of the stirring tank 31 is connected to the first liquid inlet 33-1 of the storage container 33.

[0086] As described above, the direct connection between the stirring tank 31 and the storage container 33 allows the prepared solvent to be directly transferred from the stirring tank 31 into the corresponding storage container 33. The storage container 33 provides a dedicated storage space for the solvent, facilitating its management and use.

[0087] Specifically, the storage container 33 is a storage cylinder. The storage container 33 can be designed with different capacities as needed to flexibly adapt to production needs of different scales.

[0088] Please continue to refer to Figure 1. In some embodiments of this application, the preparation device 3 further includes:

[0089] The first connecting pipe 34 connects the first liquid outlet 31-4 of the stirring tank 31 and the first liquid inlet 33-1 of the storage container 33, realizing the direct connection design between the stirring tank 31 and the storage container 33.

[0090] The first valve 35 is connected to the first connecting pipe 34. The first valve 35 can be opened or closed to realize the connection and isolation between the stirring tank 31 and the storage container 33. The first valve 35 can precisely control the flow of solvent from the stirring tank 31 and the storage container 33, ensuring that solvent transfer is only carried out when needed. For example, during the solvent stirring and preparation process, the first valve 35 can be closed to prevent the solvent that is not stirred evenly from entering the storage container 33. After the solvent preparation is completed, the first valve 35 can be opened to realize the transfer of solvent.

[0091] The first pump 36 is connected to the first connecting pipe 34. The first pump 36 can provide power for the flow of solvent, ensuring that the solvent can be smoothly delivered from the stirring tank 31 to the storage container 33, greatly improving the solvent delivery efficiency.

[0092] It is understandable that, given the same quality of raw materials, the higher the concentration of the solvent being prepared, the smaller the volume of the solvent. Therefore, the solvent being prepared is preferably a high-concentration solvent (higher than the concentration required for pulping), which requires a smaller storage volume during storage, effectively saving storage space and reducing the number or size of storage containers 33, thereby reducing the cost of storage containers 33. Moreover, high-concentration solvents can be easily diluted to the required lower concentration by adding solvents (deionized water and organic alcohol solutions), providing greater flexibility.

[0093] Please continue to refer to Figure 1. In some embodiments of this application, the storage container 33 has a second liquid outlet 33-2, and the preparation device 3 further includes:

[0094] Metering container 37 has a second liquid inlet 37-1, and the second liquid outlet 33-2 of storage container 33 is connected to the second liquid inlet 37-1 of metering container 37.

[0095] As set up above, the second liquid outlet 33-2 of the storage container 33 and the second liquid inlet 37-1 of the metering container 37 are connected. The metering container 37 can quantitatively weigh the amount of solvent required for slurry preparation, realize accurate measurement of solvent, and ensure the accurate ratio of solvent components in the carbon paper preparation process.

[0096] The measuring container 37 includes a measuring bucket and a weighing structure. The weighing structure includes, but is not limited to, an electronic scale. The measuring bucket is supported on the weighing structure to improve the accuracy of the measurement.

[0097] Please continue to refer to Figure 1. In some embodiments of this application, the preparation device 3 further includes:

[0098] The second connecting pipe 38 connects the second liquid outlet 33-2 of the storage container 33 and the second liquid inlet 37-1 of the metering container 37, realizing the direct connection design between the storage container 33 and the metering container 37.

[0099] The second valve 39 is connected to the second connecting pipe 38. The second valve 39 can be opened or closed to realize the connection and isolation between the storage container 33 and the metering container 37. The second valve 39 can precisely control the flow of solvent from the storage container 33 to the metering container 37 to ensure that the transfer is only carried out when needed. For example, when it is not necessary to prepare slurry, the second valve 39 can be closed, and when it is necessary to prepare slurry, the second valve 39 can be opened to realize the transfer of solvent.

[0100] The second pump 310 is connected to the second connecting pipe 38. The second pump 310 can provide power for the flow of solvent, ensuring that the solvent can be smoothly delivered from the storage container 33 to the metering container 37, greatly improving the solvent delivery efficiency.

[0101] Furthermore, as shown in Figure 1, the metering container 37 has a third outlet 37-2, and the preparation device 3 also includes:

[0102] The third connecting pipe 311 has one end connected to the third outlet 37-2 of the metering container 37, and the other end of the third connecting pipe 311 is used to connect to the slurry preparation system.

[0103] The third valve 312 is connected to the third connecting pipe 311. The third valve 312 can be opened or closed to realize the connection and isolation between the metering container 37 and the slurry preparation system. The third valve 312 can precisely control the flow of solvent from the metering container 37 to the slurry preparation system to ensure that the transfer is only required when needed. If slurry preparation is not required, the third valve 312 can be closed. If slurry preparation is required, the third valve 312 can be opened to realize the transfer of solvent.

[0104] The third pump 313 is connected to the third connecting pipe 311. The third pump 313 can provide power for the flow of solvent, ensuring that the solvent can be smoothly delivered from the metering container 37 to the slurry preparation system, greatly improving the solvent delivery efficiency.

[0105] Filter 3B is connected to the third connecting pipe 311. Filter 3B can effectively remove impurities, particles and contaminants from the solvent, and prevent impurities, particles and contaminants from entering the pulp preparation system as much as possible, so as to ensure that the solvent entering the pulp preparation system is purer and improve the quality of carbon paper.

[0106] Furthermore, as shown in Figure 1, the preparation apparatus 3 also includes:

[0107] The mobile trolley 314 and the measuring container 37 are mounted on the mobile trolley 314.

[0108] As set up above, the metering container 37 is placed on the mobile trolley 314, which can be easily moved to different working positions to adapt to different production needs, reduce the need for manual handling of the metering container 37, reduce labor intensity and handling costs, and improve production efficiency.

[0109] Please continue to refer to Figure 1. In some embodiments of this application, a liquid level sensor 3C is provided inside both the stirring tank 31 and the storage container 33. The liquid level sensor 3C is located at the upper part of the inside of the stirring tank 31 and the storage container 33.

[0110] In this way, the liquid level sensor 3C can monitor the liquid level in the stirring tank 31 and the storage container 33 in real time, and can issue an alarm in time by acquiring the liquid level data to prevent solvent overflow.

[0111] Please continue to refer to Figure 1. In some embodiments of this application, the water supply device 1 includes:

[0112] Bucket 11 is used to store deionized water;

[0113] The water supply pipeline 12 includes a main water supply pipeline 121 and multiple branch water supply pipelines 122 connected to the main water supply pipeline 121. The main water supply pipeline 121 is connected to the water tank 11, and the multiple branch water supply pipelines 122 are connected to the water inlets 31-1 of the multiple mixing tanks 31.

[0114] The fourth pump 13 and the fourth valve 14 are both connected to the main water supply line 121;

[0115] Multiple fifth valves 15 are connected to corresponding water supply branch pipes 122.

[0116] Specifically, the water tank 11 has a fourth outlet 11-1, which is connected to the main water supply line 121. Multiple water supply branch lines 122 are correspondingly connected to the water inlets 31-1 of multiple stirring tanks 31. Thus, the same water tank 11 can simultaneously supply deionized water to multiple preparation devices 3. A fourth valve 14 is connected to the main water supply line 121 and can open or close the fourth outlet 11-1. A fifth valve 15 is connected to the corresponding water supply branch line 122 and can open or close the corresponding water inlet 31-1. Thus, the fourth valve 14 and the fifth valve 15 together constitute the water supply system. The hierarchical control structure of device 1 includes a fourth valve 14, which acts as the main water supply control switch, controlling the overall flow of deionized water from the water tank 11 to each stirring cylinder 31. The fifth valve 15 acts as an independent control switch, allowing for the individual opening of the corresponding fifth valve 15 when deionized water needs to be supplied to a specific preparation device 3, thus achieving precise water supply to a single preparation device 3 and improving the system's flexibility and reliability. The fourth pump 13 is connected to the main water supply pipeline 121, providing power for the flow of deionized water and ensuring that it can be smoothly transported from the water tank 11 to each stirring cylinder 31, greatly improving the efficiency of deionized water delivery.

[0117] Please continue to refer to Figure 1. In some embodiments of this application, the water supply device 1 includes:

[0118] Filter 3B and liquid flow meter 3D are both connected to the main water supply line 121.

[0119] As configured above, filter 3B is connected to the main water supply line 121. Filter 3B can effectively remove impurities, particles, and contaminants from the deionized water, preventing them from entering the mixing tank 3A and ensuring that the deionized water entering the mixing tank 3A is purer, thus improving the quality of the carbon paper. Liquid flow meter 3D is connected to the main water supply line 121. Liquid flow meter 3D can accurately measure the liquid flow rate through the main water supply line 121, providing accurate liquid flow rate data for the production process and ensuring that each preparation device 3 obtains the required amount of water, thereby guaranteeing the quality and consistency of the prepared carbon paper.

[0120] As shown in Figure 1, a liquid level sensor 3C is installed inside the water tank 11, and the liquid level sensor 3C is located at the upper part of the inside of the water tank 11.

[0121] In this way, the liquid level sensor 3C can monitor the liquid level in the water tank 11 in real time, and can issue an alarm in time based on the acquired liquid level data to prevent excessive overflow of deionized water in the water tank 11.

[0122] As shown in Figure 1, the top of the water tank 11 is also provided with an inlet 11-2 for injecting deionized water.

[0123] Please continue to refer to Figure 1. In some embodiments of this application, the alcohol supply device 2 includes:

[0124] Alcohol container 2-1 is used to store organic alcohol solutions;

[0125] The alcohol supply pipeline 2-2 includes a main alcohol supply pipeline 2-2-1 and multiple branch alcohol supply pipelines 2-2-2 connected to the main alcohol supply pipeline 2-2-1. The main alcohol supply pipeline 2-2-1 is connected to the alcohol tank 2-1, and the multiple branch alcohol supply pipelines 2-2-2 are connected to the alcohol inlets 31-2 of multiple stirring tanks 31.

[0126] The fifth pump 2-3 and the sixth valve 2-4 are both connected to the main alcohol supply line 2-2-1;

[0127] Multiple seventh valves 2-5 are connected to the corresponding alcohol supply branch line 2-2-2.

[0128] Specifically, the alcohol tank 2-1 has a fifth outlet 2-1-1, which is connected to the main alcohol supply line 2-2-1. Multiple alcohol supply branch lines 2-2-2 are correspondingly connected to the alcohol inlets 31-2 of multiple stirring cylinders 31. Thus, the same alcohol tank 2-1 can simultaneously supply organic alcohol solutions to multiple preparation devices 3. A sixth valve 2-4 is connected to the main alcohol supply line 2-2-1, and can open or close the fifth outlet 2-1-1. A seventh valve 2-5 is connected to the corresponding alcohol supply branch line 2-2-2, and can open or close the corresponding alcohol inlet 31-2. Thus, the sixth valve 2-4 and the seventh valve 2-5 together constitute… The alcohol supply device 2 has a hierarchical control structure. The sixth valve 2-4 serves as the main alcohol supply control switch, which can control the overall flow of organic alcohol solution from alcohol tank 2-1 to each stirring cylinder 31. The seventh valve 2-5 serves as an independent control switch. When it is necessary to supply organic alcohol solution to a specific preparation device 3, the corresponding seventh valve 2-5 can be opened individually to achieve precise alcohol supply to a single preparation device 3, thereby improving the flexibility and reliability of the system. The fifth pump 2-3 is connected to the main alcohol supply pipeline 2-2-1. The fifth pump 2-3 can provide power for the flow of organic alcohol solution, ensuring that the organic alcohol solution can be smoothly transported from alcohol tank 2-1 to each stirring cylinder 31, greatly improving the transport efficiency of organic alcohol solution.

[0129] Please continue to refer to Figure 1. In some embodiments of this application, the water supply device 1 includes:

[0130] Filter 3B and liquid flow meter 3D are both connected to the main alcohol supply line 2-2-1.

[0131] As set up above, filter 3B is connected to the main alcohol supply line 2-2-1. Filter 3B can effectively remove impurities, particles, and contaminants from the organic alcohol solution, preventing them from entering the mixing tank 3A. This ensures that the organic alcohol solution entering the mixing tank 3A is purer, thus improving the quality of the carbon paper. Liquid flow meter 3D is connected to the main alcohol supply line 2-2-1. Liquid flow meter 3D can accurately measure the liquid flow rate through the main alcohol supply line 2-2-1, providing accurate liquid flow rate data for the production process. This ensures that each preparation device 3 obtains the required amount of alcohol, thereby guaranteeing the quality and consistency of the prepared carbon paper.

[0132] As shown in Figure 1, a liquid level sensor 3C is installed inside the alcohol tank 2-1, and the liquid level sensor 3C is located at the upper part of the inside of the alcohol tank 2-1.

[0133] In this way, the liquid level sensor 3C can monitor the liquid level in the alcohol tank 2-1 in real time, and can issue an alarm in time based on the acquired liquid level data to prevent the organic alcohol solution in the alcohol tank 2-1 from overflowing.

[0134] As shown in Figure 1, the top of the alcohol tank 2-1 is also provided with an alcohol inlet 2-1-2 for injecting organic alcohol solution.

[0135] As can be seen from the foregoing description and Figure 1, in this embodiment, the water supply device 1 and the alcohol supply device 2 have completely identical structures, differing only in function. Thus, the water supply device 1 and the alcohol supply device 2 can be mass-produced, improving production convenience.

[0136] Please refer to Figures 1 and 2. Figure 2 is a simplified structural diagram of a specific embodiment of the carbon paper pulping production line provided in this application.

[0137] This application also provides a carbon paper pulping production line, including the aforementioned carbon paper solvent preparation system.

[0138] The carbon paper pulping production line of this application includes the aforementioned carbon paper solvent preparation system, and therefore has the same technical effects as the aforementioned carbon paper solvent preparation system, which will not be repeated here.

[0139] As shown in Figures 1 and 2, the preparation device 3 has a first solvent outlet, and the carbon paper pulping production line also includes:

[0140] Solvent tank 4 includes a solvent tank water inlet 41, a solvent tank alcohol inlet 42, a solvent inlet 43, and a second solvent outlet 44. The interior of solvent tank 4 has a stirrer 3A. The water supply device 1 is connected to the solvent tank water inlet 41, the alcohol supply device 2 is connected to the solvent tank alcohol inlet 42, and each first solvent outlet is connected to the solvent inlet 43.

[0141] At least one material cylinder 5 and at least one feeding mechanism 6 for providing carbon fiber. The material cylinder 5 includes a solvent filling port 51 and a feeding port 52. The material cylinder 5 has a mixer 3A inside. The second solvent outlet 44 of the solvent cylinder 4 is connected to the solvent filling port 51 of the material cylinder 5. The feeding mechanism 6 is connected to the feeding port 52.

[0142] As set up above, each component solution, deionized water, and organic alcohol solution can be injected into solvent tank 4. The deionized water and organic alcohol solution can dilute the high-concentration solvent prepared by the solvent preparation system. Through stirring by mixer 3A, each solvent can be uniformly mixed to obtain a low-concentration mixed solvent. After the mixed solvent in solvent tank 4 is introduced into material tank 5, material tank 5 can uniformly disperse carbon fibers into the mixed solvent through mixer 3A, thereby preparing the required slurry.

[0143] Figure 2 shows three material cylinders 5. In some embodiments of this application, the number of material cylinders 5 is more than three, which meets the needs of continuous mass production and improves production efficiency.

[0144] As shown in Figure 2, a liquid level sensor 3C is installed inside the solvent cylinder 4 and the material cylinder 5. The liquid level sensor 3C is located at the upper part of the inside of the solvent cylinder 4 and the material cylinder 5.

[0145] In this way, the liquid level sensor 3C can monitor the liquid level in the solvent tank 4 and the material tank 5 in real time. The acquired liquid level data can be used to issue an alarm in a timely manner to prevent the mixed solvent in the solvent tank 4 or the slurry in the material tank 5 from overflowing due to excessive amount of mixed solvent or slurry.

[0146] Please continue to refer to Figure 2. In some embodiments of this application, the carbon paper pulping production line further includes:

[0147] The first connecting pipe 7 includes a first main pipe 71 and at least one first branch pipe 72 connected to the first main pipe 71. The first main pipe 71 is connected to the second solvent outlet 44 of the solvent cylinder 4, and the first branch pipe 72 is connected to the solvent filling port 51 of the material cylinder 5.

[0148] The sixth pump 8 and the eighth valve 9 are both connected to the first main pipeline 71;

[0149] Multiple ninth valves 10 are connected to corresponding first branch pipes 72.

[0150] As configured above, the first main pipeline 71 is connected to the second solvent outlet 44 of the solvent cylinder 4, and the first branch pipeline 72 is connected to the solvent filling port 51 of the material cylinder 5. This achieves the connection between the solvent cylinder 4 and the material cylinder 5, allowing the mixed solvent inside the solvent cylinder 4 to flow into each material cylinder 5. The eighth valve 9 is connected to the first main pipeline 71 and can open or close the second solvent outlet 44 of the solvent cylinder 4. The ninth valve 10 is connected to the corresponding first branch pipeline 72 and can open or close the corresponding solvent filling port 51. Thus, the eighth valve 9 and... The ninth valve 10 together constitutes a hierarchical control structure. The eighth valve 9 serves as the main control switch, which can control the overall flow of the mixed solvent from the solvent cylinder 4 to each material cylinder 5. The ninth valve 10 serves as an independent control switch, which can be opened individually when it is necessary to supply mixed solvent to each material cylinder 5, thereby improving the flexibility and reliability of the system. The sixth pump 8 is connected to the first main pipeline 71. The sixth pump 8 can provide power for the flow of the mixed solvent, ensuring that the mixed solvent can be smoothly delivered from the solvent cylinder 4 to each material cylinder 5, thereby greatly improving the delivery efficiency of the mixed solvent.

[0151] As shown in Figure 2, in some embodiments of this application, the carbon paper pulping production line further includes:

[0152] Both filter 3B and liquid flow meter 3D are connected to the first main pipeline 71.

[0153] As configured above, filter 3B is connected to the first main pipeline 71. Filter 3B can effectively remove impurities, particles, and contaminants from the mixed solvent, preventing them from entering the material cylinder 5 as much as possible, ensuring that the mixed solvent entering the material cylinder 5 is purer and improving the quality of the carbon paper. Liquid flow meter 3D is connected to the first main pipeline 71. Liquid flow meter 3D can accurately measure the liquid flow rate through the first main pipeline 71, providing accurate liquid flow rate data for the production process, ensuring that each material cylinder 5 obtains the required amount of mixed solvent, thereby guaranteeing the quality and consistency of the carbon paper.

[0154] Please continue to refer to Figure 2. In some embodiments of this application, the feed cylinder 5 has a waste liquid inlet 53, and the carbon paper pulping production line also includes:

[0155] Waste liquid storage container 11 is used to store waste liquid generated during the preparation of carbon paper. Waste liquid storage container 11 has a first waste liquid outlet 111, which is connected to the waste liquid filling port 53 of the material cylinder 5.

[0156] In existing technologies, pulp preparation is done according to a set formula and used immediately. The papermaking process generates a large amount of waste liquid, which not only results in high production costs and low efficiency but also requires waste liquid treatment. Compared with freshly prepared pulp, the waste liquid is only slightly less concentrated. Therefore, this application stores the waste liquid in a waste liquid storage container 11 and injects it into the pulp preparation cylinder 5 to recycle, adjust, and reuse the waste liquid, simplifying the waste liquid treatment process and reducing production costs.

[0157] The concentration of the mixed solvent can be adjusted depending on the amount of waste liquid added to ensure that the slurry prepared each time is consistent. The concentration of the mixed solvent can be adjusted by changing the amount of deionized water and organic alcohol solution added to solvent tank 4.

[0158] As shown in Figure 2, the waste liquid storage container 11 has a stirrer 3A inside. The stirrer 3A is used to stir the waste liquid before use to solve the problems of stratification and inconsistent concentration that occur when the waste liquid is stored in the waste liquid storage container 11 for a long time.

[0159] Furthermore, as shown in Figure 2, the carbon paper pulping production line also includes:

[0160] The second connecting pipe 12 includes a second main pipe 121 and at least one second branch pipe 122 connected to the second main pipe 121. The second main pipe 121 is connected to the first waste liquid outlet 111 of the waste liquid storage container 11, and the second branch pipe 122 is connected to the waste liquid filling port 53 of the material cylinder 5.

[0161] The seventh pump 13 is connected to the second main pipeline 121;

[0162] Multiple tenth valves 14 are connected to the corresponding second branch pipes 122.

[0163] As configured above, the second main pipeline 121 is connected to the first waste liquid outlet 111 of the waste liquid storage container 11, and the second branch pipeline 122 is connected to the waste liquid filling port 53 of the material cylinder 5, thereby connecting the waste liquid storage container 11 and the material cylinder 5, allowing the waste liquid inside the waste liquid storage container 11 to flow into each material cylinder 5; the tenth valve 14 is set on the corresponding second branch pipeline 122, and the tenth valve 14 can open or close the corresponding waste liquid filling port 53. Thus, the tenth valve 14 acts as an independent control switch, and when it is necessary to provide waste liquid to each material cylinder 5, the corresponding tenth valve 14 can be opened separately, improving the flexibility and reliability of the system; the seventh pump 13 is connected to the second main pipeline 121, and the seventh pump 13 can provide power for the flow of waste liquid, ensuring that the waste liquid can be smoothly transported from the waste liquid storage container 11 to each material cylinder 5, greatly improving the waste liquid transportation efficiency.

[0164] Please continue to refer to Figure 2. In some embodiments of this application, the carbon paper pulping production line further includes:

[0165] Both filter 3B and liquid flow meter 3D are connected to the second main pipeline 121.

[0166] As set up above, filter 3B is connected to the second main pipeline 121. Filter 3B can effectively remove impurities, particles and contaminants from the waste liquid, and prevent impurities, particles and contaminants from entering the material cylinder 5 as much as possible, thereby improving the quality of carbon paper. Liquid flow meter 3D is connected to the second main pipeline 121. Liquid flow meter 3D can accurately measure the liquid flow rate through the second main pipeline 121, which makes it easy to adjust the concentration of mixed solvent according to the amount of waste liquid, thereby ensuring the quality and consistency of carbon paper.

[0167] Please continue to refer to Figure 2. In some embodiments of this application, the waste liquid storage container 11 has a first waste liquid inlet 112, and the carbon paper pulping production line further includes:

[0168] The backup storage container 15 is used to store waste liquid. The backup storage container 15 has a second waste liquid inlet 151 and a second waste liquid outlet 152. The first waste liquid outlet 111 of the waste liquid storage container 11 is connected to the second waste liquid inlet 151 of the backup storage container 15, and the second waste liquid outlet 152 of the backup storage container 15 is connected to the first waste liquid inlet 112 of the waste liquid storage container 11.

[0169] As set up above, when the waste liquid inside the waste liquid storage container 11 has reached the storage limit, some of the waste liquid inside the waste liquid storage container 11 can enter the backup storage container 15, and the backup storage container 15 plays the role of expanding the waste liquid storage space; when preparing slurry, the waste liquid inside the backup storage container 15 can return to the waste liquid storage container 11 and then be transported to each material cylinder 5.

[0170] As shown in Figure 2, the second connecting pipe 12 also includes a third branch pipe 123, which is connected to the backup storage container 15, thus connecting the waste liquid storage container 11 and the backup storage container 15. The carbon paper pulping production line also includes:

[0171] The eleventh valve 16 is connected to the third branch pipe 23. The eleventh valve 16 can be opened or closed to connect or disconnect the waste liquid storage container 11 and the backup storage container 15. For example, when the waste liquid inside the waste liquid storage container 11 reaches the storage limit, the eleventh valve 16 can be opened to connect the waste liquid storage container 11 and the backup storage container 15, so that the waste liquid inside the waste liquid storage container 11 can enter the backup storage container 15. When the waste liquid inside the waste liquid storage container 11 has not reached the storage limit, the eleventh valve 16 can be closed to disconnect the waste liquid storage container 11 and the backup storage container 15.

[0172] As shown in Figure 2, the spare storage container 15 has a stirrer 3A inside. The stirrer 3A is used to stir the waste liquid before use to solve the problems of layering and uneven concentration that occur when the waste liquid is stored in the waste liquid storage container 11 for a long time.

[0173] As shown in Figure 2, both the spare storage container 15 and the waste liquid storage container 11 are equipped with a liquid level sensor 3C, which is located at the upper part of the interior of the spare storage container 15 or the waste liquid storage container 11.

[0174] In this way, the liquid level sensor 3C can monitor the liquid level in the backup storage container 15 or the waste liquid storage container 11 in real time. The acquired liquid level data can be used to issue an alarm in a timely manner to prevent the waste liquid in the backup storage container 15 or the waste liquid storage container 11 from overflowing.

[0175] Figure 2 shows a spare storage container 15. In other embodiments of this application, the number of spare storage containers 15 can be multiple, further expanding the storage space for waste liquid to meet different production needs.

[0176] As shown in Figure 2, in some embodiments of this application, the carbon paper pulping production line further includes:

[0177] The third connecting pipe 17 connects the second waste liquid outlet 152 of the spare storage container 15 and the first waste liquid inlet 112 of the waste liquid storage container 11.

[0178] The twelfth valve 18 and the eighth pump 19 are connected to the third connecting pipe 17.

[0179] As configured above, the twelfth valve 18 can connect or disconnect the second waste liquid outlet 152 of the backup storage container 15 and the first waste liquid inlet 112 of the waste liquid storage container 11. When it is necessary to transport the waste liquid in the backup storage container 15 to the material cylinder 5, the twelfth valve 18 can be opened to connect the second waste liquid outlet 152 of the backup storage container 15 and the first waste liquid inlet 112 of the waste liquid storage container 11, so that the waste liquid in the backup storage container 15 can return to the waste liquid storage container 11 and then be transported to each material cylinder 5. When it is not necessary to transport the waste liquid in the backup storage container 15 to the material cylinder 5, the twelfth valve 18 can be closed to disconnect the second waste liquid outlet 152 of the backup storage container 15 and the first waste liquid inlet 112 of the waste liquid storage container 11. The eighth pump 19 is connected to the third connecting pipeline 17. The eighth pump 19 can provide power for the flow of waste liquid, ensuring that the waste liquid can be smoothly transported from the backup storage container 15 to the waste liquid storage container 11, greatly improving the transport efficiency of waste liquid.

[0180] Furthermore, in some embodiments of this application, the carbon paper pulping production line further includes:

[0181] Filter 3B is connected to the third connecting pipe 17.

[0182] As set up above, filter 3B is connected to the third connecting pipe 17. Filter 3B removes impurities, particles and pollutants from the waste liquid, thereby improving the quality of carbon paper preparation.

[0183] Please continue to refer to Figure 2. In some embodiments of this application, the feed cylinder 5 includes a feed cylinder water inlet 54 and a feed cylinder alcohol inlet 55. The carbon paper pulping production line also includes:

[0184] Water pipe 20 and thirteenth valve 21, water pipe 20 has multiple first branch water pipes 201, the first branch water pipes 201 are connected to water supply device 1 and corresponding material cylinder inlet 54, and the thirteenth valve 21 is connected to the first branch water pipes 201;

[0185] The alcohol pipeline 22 and the fourteenth valve 24 are provided. The alcohol pipeline 22 has multiple first branch pure pipelines 221. The first branch pure pipelines 221 are connected to the alcohol supply device 2 and the corresponding material cylinder inlet 55. The fourteenth valve 24 is connected to the first branch pure pipelines 221.

[0186] As set up above, during slurry preparation, valves 13 and 14 can be opened or closed to select whether to add deionized water and organic alcohol solution to the slurry. If the current slurry concentration is higher than the required slurry concentration, valves 13 and 14 can be opened to add deionized water and organic alcohol solution to the slurry, so that the concentration of the prepared slurry reaches the required concentration. If the current slurry concentration is lower than the required slurry concentration, valves 13 and 14 can be closed to improve the stability and consistency of the prepared slurry and improve production efficiency.

[0187] As shown in Figure 2, water pipe 20 also has a second branch water pipe 202, and alcohol pipe 22 also has a second branch alcohol pipe 222. The second branch water pipe 202 is connected to the solvent tank inlet 41 of solvent tank 4, and the second branch alcohol pipe 222 is connected to the solvent tank inlet 42 of solvent tank 4. The carbon paper pulping production line also includes:

[0188] The fifteenth valve 24 is connected to the second branch water pipe 202;

[0189] The sixteenth valve 25 is connected to the second branch alcohol line 222.

[0190] With the above settings, valves 24 and 25 can be opened or closed to select whether to add deionized water and organic alcohol solution to solvent tank 4 to prepare a mixed solvent.

[0191] Please continue to refer to Figure 2. In some embodiments of this application, the feed cylinder 5 includes a pulp outlet 56, and the carbon paper pulping production line also includes:

[0192] The slurry conveying pipeline 26 includes a main conveying pipeline 261 and multiple branch conveying pipelines 262 connected to the main conveying pipeline 261. The branch conveying pipelines 262 are connected to the slurry outlet 56 of the material cylinder 5.

[0193] As set up above, the slurry conveying pipeline 26 and the slurry outlet 56 of each material cylinder 5 are connected, and the slurry prepared by each material cylinder 5 can be conveyed to the subsequent carbon paper preparation production line by the slurry conveying pipeline 26.

[0194] Furthermore, the pulping production line for carbon paper also includes:

[0195] The ninth pump 27 and the seventeenth valve 28 are connected to the branch delivery line 262.

[0196] As configured above, the seventeenth valve 28 can open the slurry outlet 56 of the corresponding material cylinder 5 when slurry needs to be conveyed, or close the slurry outlet 56 of the corresponding material cylinder 5 when slurry does not need to be conveyed; the ninth pump 27 can provide power for slurry conveying and improve conveying efficiency.

[0197] Furthermore, in this embodiment, the mixer 3A has speed adjustment and timing functions to meet different mixing needs and improve mixing efficiency. The mixer 3A is a mature prior art in this field and will not be described in detail here.

[0198] In this embodiment, both the feeding mechanism 32 and the feeding mechanism 6 have functions such as automatic weighing, uniform feeding, and dust-free feeding. Uniform feeding solves the problem of material agglomeration and difficulty in dispersion. The feeding mechanism 32 and the feeding mechanism 6 are mature existing technologies in this field and will not be described in detail here.

[0199] In the embodiments of this application, each pump is a high-viscosity liquid transfer pump, such as a screw pump, to solve the problem of traditional centrifugal pumps being unable to pump or becoming clogged due to the high viscosity of the medium. Screw pumps are a mature existing technology in this field and will not be described in detail here.

[0200] In the embodiments of this application, each liquid flow meter 3D is a high-viscosity liquid flow meter, such as a gear flow meter, to achieve more accurate measurement of high-viscosity liquids. Liquid flow meter 3D is a mature prior art in this field, and will not be described in detail here.

[0201] In the embodiments of this application, each valve is a solenoid valve, which has higher control precision. Solenoid valves are a mature existing technology in this field and will not be described in detail here.

[0202] In this embodiment, the stirring tank 31, solvent tank 4, and material tank 5 are all double-layer heating tanks with functions such as timed preheating, rapid heating, and constant temperature control. The tank body is made of stainless steel, and the outer wall is equipped with a high-density rubber-plastic sponge insulation layer. Heating and stirring are used to meet the dissolution characteristics of different materials and improve stirring efficiency. Constant temperature control is used to eliminate the influence of external temperature changes on the production process. The stirring tank 31, solvent tank 4, and material tank 5 are existing technologies that are mature in the field and will not be described in detail here.

[0203] In addition, the pulping production line of the carbon paper of this application also includes a controller, which is connected to all electronic components to realize automatic control of the entire pulp preparation process, improve the level of automation, and improve the pulp preparation efficiency.

[0204] Specifically, the controller can be a PLC. A PLC can quickly respond to input signals, achieving real-time control and meeting the high-precision requirements of industrial production. PLC is a mature control technology in this field and will not be elaborated upon further here.

[0205] The working process of the carbon paper pulping production line in this application includes:

[0206] Various high-concentration solvents are prepared using a solvent preparation system and sealed in storage containers for later use.

[0207] According to the waste liquid preparation formula, various high-concentration solvents are added to solvent tank 4 using mobile cart 314, and stirred evenly for later use.

[0208] Add waste liquid quantitatively from waste liquid storage container 11 to material tank 5. According to the ratio, add high concentration mixed solvent quantitatively from solvent tank 4 to material tank 5. Stir evenly and set aside.

[0209] According to the formula, carbon fiber is added to the material cylinder 5 using the feeding mechanism 6 while stirring. After the carbon fiber is evenly dispersed, the slurry preparation is completed.

[0210] The pulp is supplied to the next production line. At the same time, the waste liquid storage container recovers the waste liquid generated in paper production for use in the preparation of the next batch of pulp.

[0211] The above are merely preferred embodiments of this application. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of this application, and these improvements and modifications should also be considered within the scope of protection of this application.

Claims

1. A solvent preparation system for carbon paper, characterized in that, include: Water supply device for providing deionized water; An alcohol supply device for supplying organic alcohol solutions; Multiple sets of preparation devices are provided, each including a stirring tank and a feeding mechanism for providing raw materials. The stirring tank includes a water inlet, an alcohol inlet, and a material inlet. The water supply device is connected to each of the water inlets, the alcohol supply device is connected to each of the alcohol inlets, and the feeding mechanism is connected to the material inlets. Each set of preparation devices is used to prepare a solvent.

2. The solvent preparation system for carbon paper according to claim 1, characterized in that, The stirring tank has a first liquid outlet, and the preparation device further includes a storage container, which has a first liquid inlet, and the first liquid outlet and the first liquid inlet are connected.

3. The solvent preparation system for carbon paper according to claim 2, characterized in that, The storage container has a second liquid outlet, and the preparation device further includes a metering container, which has a second liquid inlet, and the second liquid outlet and the second liquid inlet are connected.

4. The solvent preparation system for carbon paper according to any one of claims 1-3, characterized in that, The water supply device includes: a water tank for storing the deionized water; a water supply pipeline including a main water supply pipeline and multiple branch water supply pipelines connected to the main water supply pipeline, wherein the main water supply pipeline is connected to the water tank, and the multiple branch water supply pipelines are correspondingly connected to multiple water inlets; a fourth pump and a fourth valve, both connected to the main water supply pipeline; and multiple fifth valves connected to the corresponding branch water supply pipelines.

5. The solvent preparation system for carbon paper according to any one of claims 1-3, characterized in that, The alcohol supply device includes: an alcohol tank for storing the organic alcohol solution; an alcohol supply pipeline including a main alcohol supply pipeline and multiple branch alcohol supply pipelines connected to the main alcohol supply pipeline, the main alcohol supply pipeline being connected to the alcohol tank, and the multiple branch alcohol supply pipelines being connected to multiple alcohol inlets respectively; a fifth pump and a sixth valve, both connected to the main alcohol supply pipeline; and multiple seventh valves connected to the corresponding branch alcohol supply pipelines.

6. A pulping production line for carbon paper, characterized in that, The solvent preparation system for carbon paper as described in any one of claims 1-5.

7. The carbon paper pulping production line according to claim 6, characterized in that, The preparation apparatus has a first solvent outlet. The carbon paper pulping production line further includes: a solvent tank, including a solvent tank water inlet, a solvent tank alcohol inlet, a solvent inlet, and a second solvent outlet. The solvent tank has a stirrer inside. A water supply device is connected to the solvent tank water inlet, and an alcohol supply device is connected to the solvent tank alcohol inlet. Each of the first solvent outlets can be connected to the solvent inlet. At least one material tank and at least one feeding mechanism for providing carbon fibers are also included. The material tank includes a solvent filling port and a feeding port. The material tank has a stirrer inside. The second solvent outlet is connected to the solvent filling port, and the feeding mechanism is correspondingly connected to the feeding port.

8. The carbon paper pulping production line according to claim 7, characterized in that, The feed cylinder includes a waste liquid filling port, and the carbon paper pulping production line further includes a waste liquid storage container for storing the waste liquid generated during the preparation of the carbon paper. The waste liquid storage container has a first waste liquid outlet, and the first waste liquid outlet is connected to the waste liquid filling port.

9. The carbon paper pulping production line according to claim 8, characterized in that, The waste liquid storage container is equipped with a stirrer inside.

10. The carbon paper pulping production line according to claim 8, characterized in that, The waste liquid storage container has a first waste liquid inlet, and the carbon paper pulping production line further includes: a spare storage container for storing the waste liquid, the spare storage container having a second waste liquid inlet and a second waste liquid outlet, the first waste liquid outlet and the second waste liquid inlet being connected, and the second waste liquid outlet and the first waste liquid inlet being connected.

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