A methanol cracking hydrogen production device

Abstract

The utility model relates to the field of chemical industry, and disclose a kind of methanol cracking hydrogen production device, including base, the top of base is fixedly connected with methanol cracking reactor, the side of methanol cracking reactor is installed with first conveying pipe, the side of first conveying pipe is installed with several methanol aqueous solution tank, the other side of methanol cracking reactor is installed with second conveying pipe, the side of second conveying pipe is fixedly connected with hydrogen collection tank.The methanol cracking hydrogen production device, by setting multiple methanol aqueous solution tank evenly distributed in the side of first conveying pipe, this layout realizes the redundancy design of raw material supply, when certain methanol aqueous solution tank needs to replenish, maintain or appear fault, other tank still can normally feed, ensure that methanol cracking reactor continues stable operation, avoid the reactor operating condition fluctuation problem caused by single tank mode, simultaneously, multiple tank can be flexibly adjusted feed quantity according to downstream hydrogen production demand.

Description

Technical Field

[0001] This utility model relates to the field of chemical technology, and in particular to a methanol cracking hydrogen production device. Background Technology

[0002] A methanol cracking hydrogen production unit is a complete set of industrial equipment based on methanol steam reforming and cracking processes, which converts methanol and water or pure methanol into high-purity hydrogen.

[0003] Regarding the above-mentioned and existing related technologies, the inventors believe that the following defects often exist: The existing methanol cracking hydrogen production units generally adopt a single-tank feed supply mode, which has obvious defects: First, when a single tank is replenished, maintained, or malfunctions, the feed supply needs to be suspended, resulting in fluctuations in reactor operating conditions, a decrease in cracking efficiency, and even local overheating and deactivation of the catalyst; Second, the adjustment range of a single tank is limited, making it difficult to adapt to the dynamic hydrogen production demand of downstream industries, and it is easy to cause flow overshoot; Third, the risks of storing large-capacity tanks are concentrated, and the handling of leaks and overpressure is difficult and poses a high safety hazard. Utility Model Content

[0004] The technical problem to be solved by this utility model is that the existing methanol cracking hydrogen production equipment generally adopts a single-tank raw material supply mode. Therefore, we propose a methanol cracking hydrogen production equipment.

[0005] To achieve the above objectives, this application adopts the following technical solution: a methanol cracking hydrogen production device, including a base, a methanol cracking reactor fixedly connected to the top of the base, a first conveying pipe installed on one side of the methanol cracking reactor, a plurality of methanol-water solution tanks installed on one side of the first conveying pipe, a second conveying pipe installed on the other side of the methanol cracking reactor, and a hydrogen collection tank fixedly connected to one side of the second conveying pipe.

[0006] Preferably, there are multiple methanol-water solution tanks, which are evenly distributed on one side of the first delivery pipe.

[0007] Preferably, the volume of the methanol-water solution tank is twenty cubic meters.

[0008] Preferably, a pressure alarm is installed on one side of the methanol-water solution tank.

[0009] Preferably, an emergency shut-off valve is installed at the top of the first delivery pipe.

[0010] Preferably, the methanol-water solution tank and the methanol cracking reactor are connected and controlled by an auxiliary control system.

[0011] The technical effects and advantages of this utility model are as follows: In this invention, multiple methanol-water solution tanks are evenly distributed on one side of the first conveying pipe. This layout achieves a redundant design for raw material supply. When a methanol-water solution tank needs to be replenished, maintained, or malfunctions, the other tanks can still supply materials normally, ensuring the continuous and stable operation of the methanol cracking reactor and avoiding the reactor operating condition fluctuation problem caused by the single-tank mode. At the same time, the multiple tanks can flexibly adjust the supply amount according to the downstream hydrogen production demand, effectively solving the flow overshoot problem caused by the limited adjustment range of a single tank. Attached Figure Description

[0012] The disclosure of this utility model is illustrated with reference to the accompanying drawings. It should be understood that the drawings are for illustrative purposes only and are not intended to limit the scope of protection of this utility model. In the drawings, the same reference numerals are used to refer to the same parts: Figure 1 This is a schematic diagram of the main structure of this utility model; Figure 2 This is a schematic diagram of the planar structure of the present invention; Figure 3 This is a partial structural diagram of the methanol-water solution tank of this utility model; Figure 4 This is a partial structural diagram of the first conveying pipe of this utility model.

[0013] Legend: 1. Base; 2. Methanol cracking reactor; 3. First delivery pipe; 4. Methanol-water solution tank; 5. Second delivery pipe; 6. Hydrogen collection tank; 7. Pressure alarm; 8. Emergency shut-off valve. Detailed Implementation

[0014] Based on the technical solution of this utility model, without changing the essential spirit of this utility model, those skilled in the art can propose various interchangeable structural methods and implementation methods. Therefore, the following detailed embodiments and accompanying drawings are merely illustrative descriptions of the technical solution of this utility model, and should not be regarded as the entirety of this utility model or as a limitation or restriction of the technical solution of this utility model.

[0015] Reference Figure 1 - Figure 2 As shown, this utility model provides a technical solution: a methanol cracking hydrogen production device, including a base 1, a methanol cracking reactor 2 fixedly connected to the top of the base 1, a first conveying pipe 3 installed on one side of the methanol cracking reactor 2, a plurality of methanol aqueous solution tanks 4 installed on one side of the first conveying pipe 3, a second conveying pipe 5 installed on the other side of the methanol cracking reactor 2, a hydrogen collection tank 6 fixedly connected to one side of the second conveying pipe 5, and the number of methanol aqueous solution tanks 4 is multiple, and the methanol aqueous solution tanks 4 are evenly distributed on one side of the first conveying pipe 3. Specifically, by setting up multiple methanol-water solution tanks 4 evenly distributed on one side of the first conveying pipe 3, this layout achieves a redundant design for raw material supply. When a methanol-water solution tank 4 needs to be replenished, maintained, or malfunctions, the other tanks can still supply materials normally, ensuring the continuous and stable operation of the methanol cracking reactor 2 and avoiding the reactor operating condition fluctuation problem caused by the single-tank mode. At the same time, the multiple tanks can flexibly adjust the supply amount according to the downstream hydrogen production demand, effectively solving the flow overshoot problem caused by the limited adjustment range of a single tank.

[0016] Reference Figure 1 - Figure 2 As shown in this embodiment: the volume of methanol-water solution tank 4 is twenty cubic meters; Specifically, the 20-cubic-meter volume design is based on a comprehensive consideration of production scale, raw material storage requirements, and cost control. This volume can meet the raw material supply for methanol cracking reaction within a certain period of time, avoiding the inconvenience and increased costs caused by frequent refueling, while also preventing excessive stockpiling of raw materials and capital occupation due to excessively large tanks. At the same time, it achieves a relatively reasonable balance in terms of equipment layout and site occupation, which is conducive to the compact and efficient operation of the entire hydrogen production unit.

[0017] Reference Figure 3 As shown in this embodiment: a pressure alarm 7 is installed on one side of the methanol aqueous solution tank 4; Specifically, the pressure alarm 7 is designed to promptly issue an alarm when abnormal pressure occurs inside the methanol-water solution tank 4. When the pressure inside the tank is too high or too low, exceeding the safe range, the pressure alarm 7 will respond quickly and notify the operators to take appropriate measures. This can effectively prevent safety accidents such as tank damage and leakage caused by abnormal pressure, ensure the safe and stable operation of the entire methanol cracking hydrogen production unit, and improve the reliability and safety of the unit's operation.

[0018] Reference Figure 4 As shown in this embodiment: an emergency shut-off valve 8 is installed at the top of the first delivery pipe 3; Specifically, the emergency shut-off valve 8 plays a crucial safety role in the operation of the hydrogen production unit. In the event of a sudden emergency, such as a fire, explosion, or serious leakage in the delivery pipe, the emergency shut-off valve 8 can respond quickly and automatically cut off the flow of methanol-water solution in the first delivery pipe 3. This operation can effectively prevent the methanol-water solution from continuing to be delivered to the dangerous area, avoid further expansion and deterioration of the accident, greatly reduce the losses and harm caused by the accident, and provide a reliable guarantee for the safe operation of the entire methanol cracking hydrogen production unit.

[0019] Reference Figure 1 - Figure 2As shown in this embodiment: the methanol aqueous solution tank 4 and the methanol cracking reactor 2 are connected and controlled by an auxiliary control system; Specifically, the auxiliary control system has highly precise control capabilities. It can accurately adjust key parameters such as the flow rate, pressure, and delivery time of the methanol aqueous solution from the methanol aqueous solution tank 4 to the reactor according to the actual operating requirements of the methanol cracking reactor 2. This precise control ensures that the methanol cracking reaction can be carried out under optimal reaction conditions, effectively improving the methanol cracking efficiency and significantly enhancing the yield and quality of hydrogen.

[0020] Working Principle: During the methanol cracking reaction, the base 1 provides stable support for the entire device, ensuring that the relative positions of each component remain unchanged during operation. The methanol cracking reactor 2, as the core component, can crack methanol to produce hydrogen. The first conveying pipe 3 is responsible for conveying methanol-water solution from methanol-water solution tank 4 to methanol cracking reactor 2, ensuring the continuous progress of the reaction. The first conveying pipe 3 connects multiple methanol-water solution tanks 4 in an orderly manner, forming a stable and reliable raw material conveying channel. The methanol-water solution tanks 4 are evenly distributed on one side of the first conveying pipe 3. This layout not only facilitates centralized management and maintenance of raw materials, but also achieves redundant design of raw material supply through the setting of multiple tanks. In addition, the device is also equipped with a pressure alarm 7 and an emergency shut-off valve 8. When the pressure inside the device is abnormal, the pressure alarm 7 will issue an alarm in time, and the emergency shut-off valve 8 will quickly cut off the connection of the relevant pipelines to prevent dangerous accidents and ensure the safety and stability of the entire methanol cracking hydrogen production unit.

[0021] The technical scope of this utility model is not limited to the content described above. Those skilled in the art can make various modifications and variations to the above embodiments without departing from the technical concept of this utility model, and all such modifications and variations should fall within the protection scope of this utility model.

Claims

1. A device for hydrogen production by methanol decomposition, comprising a base (1), characterized in that: A methanol cracking reactor (2) is fixedly connected to the top of the base (1). A first conveying pipe (3) is installed on one side of the methanol cracking reactor (2). Several methanol aqueous solution tanks (4) are installed on one side of the first conveying pipe (3). A second conveying pipe (5) is installed on the other side of the methanol cracking reactor (2). A hydrogen collection tank (6) is fixedly connected to one side of the second conveying pipe (5).

2. The methanol cracking hydrogen production apparatus according to claim 1, characterized in that: The number of methanol aqueous solution tanks (4) is multiple, and the methanol aqueous solution tanks (4) are evenly distributed on one side of the first conveying pipe (3).

3. The methanol cracking hydrogen generator according to claim 1, characterized in that: The volume of the methanol-water solution tank (4) is 20 cubic meters.

4. The methanol cracking hydrogen production apparatus according to claim 1, characterized in that: A pressure alarm (7) is installed on one side of the methanol-water solution tank (4).

5. The methanol cracking hydrogen production apparatus according to claim 1, characterized in that: An emergency shut-off valve (8) is installed at the top of the first delivery pipe (3).

6. The methanol cracking hydrogen production apparatus according to claim 1, characterized in that: The methanol aqueous solution tank (4) and the methanol cracking reactor (2) are connected and controlled by an auxiliary control system.

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