Equipment and method for preparing metallocene product antistatic agent storage tank

Abstract

The invention discloses equipment and a method for preparing a metallocene product antistatic agent storage tank, and belongs to the technical field of secondary batteries. Comprising an aluminum alkyl tank used for storing and preparing an antistatic agent with a specific concentration; an antistatic agent is stored in the antistatic agent barrel, and the antistatic agent barrel is connected with the aluminum alkyl tank through an antistatic agent conveying pipeline; the isopentane conveying pipeline is connected with the aluminum alkyl tank and used for conveying isopentane, and the antistatic agent and the isopentane are conveyed into the aluminum alkyl tank through pipelines and mixed to be prepared into the antistatic agent with the specific concentration; the buffer tank is connected with the aluminum alkyl tank through a discharging pipeline, and the antistatic agent with the specific concentration is prepared and conveyed to the buffer tank to be supplied to an external reaction system for use. By additionally arranging the antistatic agent transformation system, the prepared antistatic agent solution can effectively control the static level in the reactor, reduce the phenomena of flaking and caking, prevent the discharge system from being blocked, and improve the continuity and stability of production.

Description

Technical Field

[0001] The invention belongs to the technical field of chemical production, and in particular relates to a device and a method for preparing an antistatic agent storage tank for a metallocene product. Background Art

[0002] In modern chemical production, liquid storage tanks are commonly used production equipment and are widely used to store liquid raw materials, semi-finished products, finished products or as buffer tanks. At present, in the production process of full-density polyethylene units, there are processes involving metallocene production, but there is no corresponding antistatic agent injection system, which leads to some problems in the actual production process:

[0003] 1. Lack of antistatic protection: Due to the lack of a specially designed antistatic agent injection system, the static electricity level in the reactor cannot be effectively controlled, which can easily cause flakes and agglomerations, and may even cause blockage of the discharge system.

[0004] 2. Fluctuation of reaction system: The presence of impurities such as water and oxygen will cause fluctuations in the reaction system. In severe cases, it will cause excessive static electricity, which will lead to high-temperature interlock shutdown in the reactor, affecting the continuity and stability of production. Summary of the invention

[0005] The present invention aims at the above problems existing in the prior art and proposes a device and method for preparing a metallocene product antistatic agent storage tank.

[0006] The present invention can be achieved through the following technical solutions:

[0007] A device for preparing a metallocene product antistatic agent storage tank, comprising:

[0008] Alkyl aluminum cans, which are used to store and prepare antistatic agents at specific concentrations;

[0009] an antistatic agent barrel, in which an antistatic agent is stored, and the antistatic agent barrel is connected to the alkyl aluminum can via an antistatic agent delivery pipeline;

[0010] an isopentane delivery pipeline, which is connected to the alkyl aluminum tank and is used to deliver isopentane, and the antistatic agent and isopentane are delivered to the alkyl aluminum tank through the pipelines respectively and mixed to form an antistatic agent of a specific concentration;

[0011] The buffer tank is connected to the alkyl aluminum tank through a discharge pipeline, and the antistatic agent with a specific concentration is transported to the buffer tank to be supplied to the external reaction system.

[0012] As a further improvement of the present invention, it also comprises a nitrogen delivery pipeline, which is connected to the bottom of the alkyl aluminum tank and is used for delivering nitrogen.

[0013] As a further improvement of the present invention, the nitrogen delivery pipeline is also connected to the discharge pipeline, and nitrogen can be delivered to the alkyl aluminum tank through the discharge pipeline, or the discharge pipeline can be purged when the alkyl aluminum tank is discharged.

[0014] As a further improvement of the present invention, it also includes a flare exhaust pipeline, which is connected to the nitrogen delivery pipeline and is used for depressurizing and exhausting the alkyl aluminum tank.

[0015] As a further improvement of the present invention, a discharge pump is provided on the antistatic agent delivery pipeline, and the antistatic agent in the antistatic agent barrel is delivered to the alkyl aluminum tank through the discharge pump.

[0016] As a further improvement of the present invention, the discharge pump is configured as a gear pump.

[0017] As a further improvement of the present invention, it also includes a factory wind delivery pipeline, which is connected to the unloading pump and drives the unloading pump to operate through the factory wind.

[0018] A method for preparing a storage tank for an antistatic agent for a metallocene product is also provided, which is applied to the above-mentioned device for preparing a storage tank for an antistatic agent for a metallocene product, and comprises the following steps:

[0019] S1. Determine the concentration of the antistatic agent required for the reaction system, and calculate the dosage of the antistatic agent and isopentane that need to be delivered to the alkyl aluminum tank respectively;

[0020] S2. Factory air is introduced to the discharge pump, and the antistatic agent in the antistatic agent barrel is transported to the alkyl aluminum tank through the discharge pump. At the same time, isopentane is transported to the alkyl aluminum tank through the isopentane delivery pipeline. The antistatic agent and isopentane are mixed and configured into an antistatic agent solution of a specific concentration.

[0021] As a further improvement of the present invention, the steps are also included:

[0022] S3. Nitrogen is flushed into the bottom of the alkyl aluminum tank through the nitrogen delivery pipeline. The nitrogen generates bubbles in the alkyl storage tank. The bubbles rise and escape through the liquid surface, taking away oxygen and other gas components dissolved in the antistatic agent solution.

[0023] As a further improvement of the present invention, the steps are also included:

[0024] S4. A flare exhaust pipeline is added to the nitrogen delivery pipeline. The high pressure in the tank generated when preparing the antistatic agent solution is discharged to the outside through the flare exhaust pipeline for pressure relief, and the gas in the bubbling process of the alkyl aluminum tank is discharged to the outside through the flare exhaust pipeline.

[0025] Compared with the prior art, the present invention has the following beneficial effects:

[0026] 1. By adding an antistatic agent modification system, the required ratio of antistatic agent raw material to isopentane is preset, and the two are transported to alkyl aluminum tanks for mixing and configured into an antistatic agent solution of a specific concentration. The configured antistatic agent solution can effectively control the static electricity level in the reactor, reduce flaking and agglomeration, prevent the discharge system from being blocked, and improve the continuity and stability of production;

[0027] 2. The nitrogen delivery pipeline introduces nitrogen from the bottom of the alkyl aluminum tank. In this way, the nitrogen can effectively penetrate the liquid layer, forming tiny bubbles that rise to the liquid surface. These bubbles will carry and release oxygen and other gas components dissolved in the liquid during the rising process, thereby achieving the purpose of deoxygenation;

[0028] 3. There is a flare exhaust pipeline on the nitrogen delivery pipeline. When the nitrogen bubbling increases the pressure in the tank, the excess gas can be discharged through the flare exhaust pipeline to keep the pressure in the tank stable. The flare exhaust pipeline is connected to the safety discharge system to ensure that the discharged gas can be handled safely without causing harm to the environment or personnel. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 The present invention is a process flow chart of the equipment for preparing the antistatic agent storage tank for metallocene products.

[0030] In the figure, 100, alkyl aluminum tank; 110, antistatic agent barrel; 111, antistatic agent delivery pipeline; 112, unloading pump; 120, isopentane delivery pipeline; 130, buffer tank; 131, discharge pipeline; 140, nitrogen delivery pipeline; 150, flare exhaust pipeline; 160, factory air delivery pipeline. DETAILED DESCRIPTION

[0031] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical method of the present invention, but the present invention is not limited to these embodiments.

[0032] like Figure 1 As shown, the present invention provides a device for preparing a metallocene product antistatic agent storage tank, comprising:

[0033] The alkyl aluminum can 100, as the main storage and configuration container, is used to receive and configure the antistatic agent of a specific concentration. The can has good sealing and anti-corrosion properties to ensure the stability of the quality of the internal materials;

[0034] The antistatic agent barrel 110 is specially used for storing the antistatic agent raw material, and is connected to the alkyl aluminum can 100 through the antistatic agent delivery pipeline 111. This pipeline can accurately deliver the antistatic agent to the alkyl aluminum can 100 for mixing and configuration according to the demand;

[0035] an isopentane delivery pipeline 120, which is connected to the alkyl aluminum tank 100 and is used to deliver isopentane. The antistatic agent and isopentane are delivered to the alkyl aluminum tank 100 through the pipeline and mixed to form an antistatic agent with a specific concentration;

[0036] The buffer tank 130 is connected to the alkyl aluminum tank 100 via a discharge pipeline 131 , and the antistatic agent with a specific concentration is transported to the buffer tank 130 to be supplied to an external reaction system.

[0037] In actual application, according to the concentration of the antistatic agent required by the external reaction system, the required ratio of the antistatic agent raw material to isopentane is preset, and the two are respectively transported to the alkyl aluminum tank 100 for mixing and configured into an antistatic agent solution of a specific concentration. The configured antistatic agent solution can effectively control the static electricity level in the reactor, reduce flaking and agglomeration, prevent clogging of the discharge system, and improve the continuity and stability of production.

[0038] It should be noted that, in the process of preparing the antistatic agent solution in the alkyl aluminum tank 100, the problem of bubbling deoxygenation in the tank needs to be solved to reduce the fluctuation of the reaction system caused by impurities such as water and oxygen. If this problem is not solved, it may cause excessive static electricity to cause flakes, agglomerations, blockage of the discharge system, and even high-temperature interlocking and stopping in the reactor. In this regard, a dedicated nitrogen delivery pipeline 140 and a flare discharge pipeline 150 are designed in this embodiment, as follows:

[0039] 1. Nitrogen delivery pipeline 140

[0040] First, the nitrogen delivery pipeline 140 introduces nitrogen from the bottom of the alkyl aluminum can 100. In this way, the nitrogen can effectively penetrate the liquid layer, forming tiny bubbles that rise to the liquid surface. These bubbles will carry and release oxygen and other gas components dissolved in the liquid during the rising process, thereby achieving the purpose of deoxygenation. At the same time, bubbling can also promote liquid mixing, ensuring that the antistatic agent and isopentane are fully and evenly mixed together.

[0041] The nitrogen delivery pipeline 140 is also connected to the discharge pipeline 131, and the nitrogen can be delivered to the alkyl aluminum can 100 through the discharge pipeline 131, or the discharge pipeline 131 can be purged when the alkyl aluminum can 100 is discharged;

[0042] That is, when it is necessary to supplement nitrogen into the alkyl aluminum can 100, the existing discharge pipeline 131 can be used as a channel, as an additional pipeline to supplement nitrogen into the alkyl aluminum can 100;

[0043] After the alkyl aluminum tank 100 is discharged, the discharge pipeline 131 is purged with nitrogen to effectively remove the antistatic agent solution or other impurities that may remain on the pipe wall. This not only ensures the quality of the next configuration, but also extends the service life of the equipment.

[0044] In summary, the main purpose of the nitrogen delivery pipeline 140 to transport nitrogen is to bubble the alkyl aluminum can 100, and one line of the nitrogen delivery pipeline 140 is directly connected to the bottom of the alkyl aluminum can 100, and the other line is connected to the discharge pipeline 131, both lines can transport nitrogen to the alkyl aluminum can 100, which increases the flexibility of the system. At the same time, the line connected to the discharge pipeline 131 can also be used to purge the discharge pipeline 131 to keep the discharge pipeline 131 unobstructed, reduce the maintenance frequency due to blockage or other failures, and reduce long-term operating costs.

[0045] 2. Flare pipeline 150

[0046] The flare exhaust line 150 is mainly used for pressure relief during feeding and exhaust during bubbling. When nitrogen bubbling increases the pressure in the tank, the excess gas can be discharged through the flare exhaust line 150 to keep the pressure in the tank stable, and the flare exhaust line 150 is connected to a safe exhaust system (such as a flare combustion device) to ensure that the exhausted gas can be safely handled without causing harm to the environment or personnel.

[0047] In addition, during the entire bubbling deoxygenation process, the pressure changes in the tank are closely monitored. If the pressure is too high, the flare line 150 is opened in time to release the pressure and exhaust the gas to prevent the tank from over-pressurizing. After confirming that the oxygen and other gas components in the solution have been fully removed, the nitrogen delivery is stopped and the flare line 150 is closed.

[0048] Preferably, a discharge pump 112 is provided on the antistatic agent delivery pipeline 111, and the antistatic agent in the antistatic agent barrel 110 is delivered to the alkyl aluminum tank 100 through the discharge pump 112. In this embodiment, the discharge pump 112 is configured as a gear pump;

[0049] Gear pump is a positive displacement pump suitable for conveying high viscosity fluids and can maintain a stable flow output under relatively small pressure fluctuations. It conveys fluids through the rotation of a pair of meshing gears. When the gears rotate, a vacuum is formed at the inlet to suck in the fluid, and then the fluid is brought to the outlet and discharged as the gears rotate. This working mode makes gear pumps particularly suitable for conveying antistatic agents with higher viscosity;

[0050] High-precision manufactured gear pumps can reduce internal leakage and improve flow accuracy. Precision-machined gears and tightly matched clearances help maintain consistent flow, ensuring that the amount of antistatic delivered each time is accurate.

[0051] Preferably, a factory air delivery pipeline 160 is also included, which is connected to the unloading pump 112, and the unloading pump 112 is driven by the factory air (compressed air). This design has the following advantages:

[0052] 1. No need for electric drive: Using factory wind instead of electric drive reduces the need for electrical equipment, installation costs and maintenance complexity;

[0053] 2. Improved safety: In chemical production environments, the use of non-electric drive devices can reduce the risk of explosion, especially when operating near flammable and explosive chemicals;

[0054] 3. Enhanced flexibility: The factory wind drive system can be quickly started or stopped as needed, providing greater operational flexibility.

[0055] The present invention also provides a method for preparing a storage tank for an antistatic agent for a metallocene product, which is applied to the above-mentioned device for preparing a storage tank for an antistatic agent for a metallocene product, and comprises the following steps:

[0056] S1. Determine the concentration of the antistatic agent required by the reaction system, and calculate the dosage of the antistatic agent and isopentane that need to be delivered to the alkyl aluminum tank 100 respectively;

[0057] S2. Factory air is introduced to the discharge pump 112, and the antistatic agent in the antistatic agent barrel 110 is transported to the alkyl aluminum tank 100 through the discharge pump 112. At the same time, isopentane is transported to the alkyl aluminum tank 100 through the isopentane delivery pipeline 120. The antistatic agent and isopentane are mixed and configured into an antistatic agent solution of a specific concentration.

[0058] In steps S1 and S2, the entire process can be monitored in real time using an automated control system, including key parameters such as flow, pressure, and temperature, to ensure the safety and efficiency of the operation. If any abnormality is detected, timely measures can be taken to make adjustments.

[0059] After the mixing is completed, a small amount of sample is taken out from the alkyl aluminum can 100 for concentration detection. A portable concentration meter or other laboratory methods can be used to verify whether the predetermined target concentration has been reached. If the test result shows that the concentration does not meet expectations, an antistatic agent or isopentane can be added in appropriate amounts according to the actual situation for fine-tuning until the requirements are met.

[0060] Preferably, the method further comprises the steps of:

[0061] S3. Nitrogen is flushed into the bottom of the alkyl aluminum tank 100 through the nitrogen delivery pipeline 140. The nitrogen generates bubbles in the alkyl storage tank. The bubbles rise and escape through the liquid surface, taking away oxygen and other gas components dissolved in the antistatic agent solution.

[0062] In step S3, nitrogen is introduced through the bottom of the superalkyl aluminum can 100 to achieve the purpose of bubbling and deoxygenating the antistatic agent solution configured in the can, ensuring that the quality of the antistatic agent solution is purer, improving the performance and reliability of the final product, and also solving the problem of excessive static electricity caused by residual oxygen, reducing the occurrence of flaking and agglomeration, preventing blockage of the discharge system, avoiding the risk of high-temperature interlocking shutdown in the reactor, and significantly improving production safety.

[0063] Preferably, the method further comprises the steps of:

[0064] S4. A flare exhaust pipeline 150 is added to the nitrogen delivery pipeline 140. The high pressure in the tank generated when preparing the antistatic agent solution is discharged to the outside through the flare exhaust pipeline 150 for pressure relief, and the gas in the bubbling process of the alkyl aluminum tank 100 is discharged to the outside through the flare exhaust pipeline 150.

[0065] In step S4, the design of the flare exhaust pipeline 150 effectively solves the problem of high pressure in the tank, keeps the pressure in the tank stable, prevents safety hazards caused by overpressure, and protects the safety of equipment and personnel.

[0066] The technical means disclosed in the scheme of the present invention are not limited to the technical means disclosed in the above technical means, but also include technical schemes composed of any combination of the above technical features. The above is a specific implementation of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications are also regarded as the protection scope of the present invention.

[0067] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0068] In addition, in the present invention, descriptions such as "first", "second", "one", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0069] In the present invention, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0070] In addition, the technical solutions between the various embodiments of the present invention can be combined with each other, but it must be based on the fact that ordinary technicians in the field can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

Claims

1. A device for preparing antistatic agent storage tanks for metallocene products, characterized in that: include: Alkyl aluminum cans, which are used to store and prepare antistatic agents at specific concentrations; an antistatic agent barrel, in which an antistatic agent is stored, and the antistatic agent barrel is connected to the alkyl aluminum can via an antistatic agent delivery pipeline; an isopentane delivery pipeline, which is connected to the alkyl aluminum tank and is used to deliver isopentane, and the antistatic agent and isopentane are delivered to the alkyl aluminum tank through the pipelines respectively and mixed to form an antistatic agent of a specific concentration; The buffer tank is connected to the alkyl aluminum tank through a discharge pipeline, and the antistatic agent with a specific concentration is transported to the buffer tank to be supplied to the external reaction system.

2. The device for preparing antistatic agent storage tanks for metallocene products according to claim 1, characterized in that: The invention also comprises a nitrogen delivery pipeline which is connected to the bottom of the alkyl aluminum tank and is used for delivering nitrogen.

3. The device for preparing antistatic agent storage tanks for metallocene products according to claim 2, characterized in that: The nitrogen delivery pipeline is also connected to the discharge pipeline, and nitrogen can be delivered to the alkyl aluminum tank through the discharge pipeline, or the discharge pipeline can be purged when the alkyl aluminum tank is discharged.

4. The device for preparing antistatic agent storage tanks for metallocene products according to claim 2, characterized in that: The invention also comprises a flare discharge pipeline which is connected with the nitrogen delivery pipeline and is used for depressurizing and exhausting the alkyl aluminum tank.

5. The device for preparing antistatic agent storage tanks for metallocene products according to claim 1, characterized in that: The antistatic agent delivery pipeline is provided with a discharge pump, and the antistatic agent in the antistatic agent barrel is delivered to the alkyl aluminum tank through the discharge pump.

6. The device for preparing antistatic agent storage tanks for metallocene products according to claim 5, characterized in that: The discharge pump is configured as a gear pump.

7. The device for preparing antistatic agent storage tanks for metallocene products according to claim 5, characterized in that: It also includes a factory wind transmission pipeline, which is connected to the unloading pump and drives the unloading pump to operate through the factory wind.

8. A method for preparing a storage tank for an antistatic agent for a metallocene product, applied to the device for preparing a storage tank for an antistatic agent for a metallocene product as claimed in any one of claims 1 to 7, characterized in that: The steps include: S1. Determine the concentration of the antistatic agent required for the reaction system, and calculate the dosage of the antistatic agent and isopentane that need to be delivered to the alkyl aluminum tank respectively; S2. Factory air is introduced to the discharge pump, and the antistatic agent in the antistatic agent barrel is transported to the alkyl aluminum tank through the discharge pump. At the same time, isopentane is transported to the alkyl aluminum tank through the isopentane delivery pipeline. The antistatic agent and isopentane are mixed and configured into an antistatic agent solution of a specific concentration.

9. The method for preparing a metallocene product antistatic agent storage tank according to claim 8, characterized in that: Also includes the steps: S3. Nitrogen is flushed into the bottom of the alkyl aluminum tank through the nitrogen delivery pipeline. The nitrogen generates bubbles in the alkyl storage tank. The bubbles rise and escape through the liquid surface, taking away oxygen and other gas components dissolved in the antistatic agent solution.

10. The method for preparing a metallocene product antistatic agent storage tank according to claim 9, characterized in that: Also includes the steps: S4. A flare exhaust pipeline is added to the nitrogen delivery pipeline. The high pressure in the tank generated when preparing the antistatic agent solution is discharged to the outside through the flare exhaust pipeline for pressure relief, and the gas in the bubbling process of the alkyl aluminum tank is discharged to the outside through the flare exhaust pipeline.

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