Preparation system of homogeneous catalyst

Abstract

The present invention provides a homogeneous catalyst preparation and delivery system, which comprises: a main catalyst calibration tank provided with a main catalyst inlet; the cocatalyst calibration tank is provided with a cocatalyst inlet; the catalyst activation tank is respectively communicated with the main catalyst calibration tank and the cocatalyst calibration tank; at least one of the main catalyst calibration tank and the auxiliary catalyst calibration tank comprises a shell and an inner tank, a power device and a control device are arranged at the bottom of the shell, a calibration device is arranged in the inner tank, the control device is electrically connected with the calibration device, and the main catalyst calibration tank and the auxiliary catalyst calibration tank are communicated with the reaction kettle. Whether the inner tank is in a horizontal position or not is determined through the calibration device; and when the inner tank is located at the non-horizontal position, the control device controls the power device to enable the inner tank to return to the horizontal position. According to the preparation system of the homogeneous catalyst, the main catalyst calibration tank and the auxiliary catalyst calibration tank are arranged, so that accurate metering of the catalyst is guaranteed.

Description

Technical Field

[0001] The invention belongs to the technical field of chemical production, and in particular relates to a preparation system of a homogeneous catalyst. Background Art

[0002] With the rapid development of industries such as machinery, electrical, textile, coating, and medicine, the preparation of liquid catalysts synthesized by reacting solid raw materials with solutions is usually prepared intermittently using a catalyst preparation kettle. However, the catalytic performance of each batch of catalysts obtained by intermittent preparation fluctuates, resulting in fluctuations in the composition of the products obtained by the catalytic reaction. The fluctuation of the product composition makes the subsequent product purification process operation adjustment more frequent, resulting in poor quality of the final product. In addition, the intermittent preparation of catalysts consumes a lot of manpower and has many production risks. At present, in actual production, the preparation of continuous liquid catalysts is difficult to control the temperature of the catalyst due to the heat generated during the preparation of the catalyst; and the solid materials at the bottom of the catalyst preparation kettle are easily deposited in the bottom of the kettle, resulting in low catalyst preparation efficiency. The liquid phase homogeneous catalyst used in the solution polymerization process has an unstable filling amount, which causes unstable polymerization reaction, poor product quality, and catalyst waste; the operating pressure is too high, which is dangerous, and the prepared suspension is easy to settle. As the transportation time increases, part of the catalyst accumulates in the pipeline and produces micro-polymerization reaction with olefins, causing blockage of the catalyst feed pipeline and the delivery pump, causing the reaction temperature of the polymerization reactor to fluctuate. In severe cases, the reaction temperature of the reactor will be too high, causing product quality problems and production safety accidents, and having a significant impact on the normal operation of the entire device.

[0003] CN 211586570 U discloses a continuous liquid catalyst preparation system, wherein the discharge port of the heater is connected to the solvent inlet at the top of the catalyst preparation kettle, the powder inlet at the top of the catalyst preparation kettle is connected to the feeding port of the split conveyor, the liquid phase outlet at the bottom of the catalyst preparation kettle is connected to the external storage tank through a catalyst delivery pump group, and the storage tank is connected to the circulation inlet at the bottom of the catalyst preparation kettle through a circulation pipeline, the gas phase outlet at the top of the catalyst preparation kettle is connected to the gas phase inlet of the tail gas condenser, the outer side of the catalyst preparation kettle is provided with a jacket, and the jacket is connected to a circulating water pipeline; the liquid phase circulation pipeline is connected to the circulation pipeline through a catalyst return branch for circulating the prepared catalyst. This utility model patent describes in detail the partial components of the liquid catalyst preparation system, and does not provide a catalyst activation system, making it difficult to achieve effective mixing and quantitative mixing of the main and auxiliary catalysts.

[0004] CN 212790886 U discloses a polypropylene main catalyst filling system, comprising a catalyst raw material tank, a catalyst intermediate preparation tank, a catalyst feed tank, a catalyst delivery pump, a flow meter and a pipeline; the catalyst raw material tank is a sealed packaging tank containing catalyst provided by a catalyst manufacturer, the catalyst intermediate preparation tank mixes white oil and catalyst powder into a suspension by stirring, and the catalyst feed tank and the catalyst delivery pump deliver the suspension to a reactor. The system is not provided with a main and auxiliary catalyst calibration device, and it is difficult to achieve quantitative mixing of the main and auxiliary catalysts.

[0005] In the chemical production process, the preparation method of the main catalyst and the co-catalyst, and the preparation method and design process have a significant impact on the subsequent process. Improper preparation methods will affect the active release of the catalyst and the quality of the product. Therefore, appropriate process design and development of catalyst preparation equipment are required. How to improve the active release of the catalyst and accurately control the catalyst release amount to maintain high copolymerization activity have become key technical issues that need to be solved urgently. Summary of the invention

[0006] The main purpose of the present invention is to provide a homogeneous catalyst preparation system to overcome the defects in the prior art that the preparation of homogeneous catalysts is difficult to be carried out continuously or the preparation and metering of homogeneous catalysts is not accurate enough.

[0007] In order to achieve the above object, the present invention provides a homogeneous catalyst preparation and delivery system, wherein the homogeneous catalyst preparation and delivery system is a closed system, comprising:

[0008] A main catalyst calibration tank is provided with a main catalyst inlet;

[0009] A catalyst promoter calibration tank is provided with a catalyst promoter inlet;

[0010] The catalyst activation tank is connected to the main catalyst calibration tank and the auxiliary catalyst calibration tank respectively;

[0011] A reaction kettle, connected to the catalyst activation tank;

[0012] Among them, at least one of the main catalyst calibration tank and the auxiliary catalyst calibration tank includes an outer shell and an inner tank, a power device and a control device are arranged at the bottom of the outer shell, a calibration device is arranged inside the inner tank, the control device is electrically connected to the calibration device, and confirms whether the inner tank is in a horizontal position through the calibration device; when the inner tank is in a non-horizontal position, the control device controls the power device to restore the inner tank to a horizontal position.

[0013] The homogeneous catalyst preparation and delivery system of the present invention further comprises a solvent pipeline connected to the main catalyst calibration tank, the co-catalyst calibration tank, the catalyst activation tank and the reactor.

[0014] The homogeneous catalyst preparation and delivery system of the present invention further comprises a gas pipeline connected with the main catalyst calibration tank, the co-catalyst calibration tank, the catalyst activation tank and the reactor.

[0015] The homogeneous catalyst preparation and delivery system described in the present invention further includes a main catalyst storage tank and a co-catalyst storage tank, each of which is provided with a stirring device; the main catalyst storage tank is connected to the main catalyst calibration tank, and the co-catalyst storage tank is connected to the co-catalyst calibration tank.

[0016] The homogeneous catalyst preparation and delivery system of the present invention, wherein the calibration device is a laser calibrator and / or a level meter; the inner tank is also provided with a liquid level indicator.

[0017] The homogeneous catalyst preparation and delivery system of the present invention, wherein the height-to-diameter ratio of the catalyst activation tank is 1-3.

[0018] The homogeneous catalyst preparation and delivery system of the present invention comprises a main catalyst being a metallocene catalyst and a co-catalyst being an alkyl aluminum or an alkyl aluminum oxide.

[0019] The homogeneous catalyst preparation and delivery system of the present invention is characterized in that a stirring device and a temperature monitoring device are arranged inside the reaction kettle.

[0020] The homogeneous catalyst preparation and delivery system described in the present invention further includes a main catalyst delivery pump and a co-catalyst delivery pump. The main catalyst delivery pump is arranged on the pipeline between the main catalyst storage tank and the main catalyst calibration tank, and the co-catalyst delivery pump is arranged on the pipeline between the co-catalyst storage tank and the co-catalyst calibration tank.

[0021] The homogeneous catalyst preparation and delivery system of the present invention, wherein the solvent that can be introduced into the solvent pipeline is selected from a mixture of one or more of n-butane, isobutane, n-pentane, isopentane, n-hexane, cyclohexane, n-heptane, n-octane, n-nonane and n-decane.

[0022] Beneficial effects of the present invention:

[0023] The preparation system of the homogeneous catalyst of the present invention is provided with a main and auxiliary catalyst calibration tank to ensure accurate measurement of the catalyst; since the preparation system of the present invention is a fully closed system, hydrolysis of the catalyst is effectively avoided; the setting of the solvent pipeline prevents blockage of the catalyst pipeline and equipment; even if part of the catalyst is hydrolyzed, it can still be transported normally, thereby improving the use efficiency of the catalyst, ensuring the stable operation of the device, reducing the production cost of the device, reducing side reactions, improving the quality of the product, and enhancing the market competitiveness of the device.

[0024] In addition, the homogeneous catalyst preparation system of the present invention is provided with a solvent cleaning pipeline and a gas pipeline at the same time, which can clean and purge the entire catalyst delivery pipeline, thereby avoiding catalyst residue and impurity pollution. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 Schematic diagram of a homogeneous catalyst preparation system according to one embodiment of the present invention.

[0026] Figure 2 It is a structural schematic diagram and a magnified view of a part of the area of ​​the main / co-catalyst calibration tank in one embodiment of the present invention.

[0027] Wherein, the reference numerals are:

[0028] 1 Solvent lines

[0029] 2 Main catalyst pipeline

[0030] 3 Main catalyst storage tank

[0031] 4. Stirring device

[0032] 5 Main catalyst delivery pump

[0033] 6 Main catalyst calibration tank

[0034] 7 Catalyst activation tank

[0035] 8. Stirring device

[0036] 9. Stirring device

[0037] 10 Reactor

[0038] 11 Catalyst pipeline

[0039] 12 Solvent lines

[0040] 13. Stirring device

[0041] 14 Catalyst storage tank

[0042] 15. Catalyst delivery pump

[0043] 16 Catalyst calibration tank

[0044] 17 Gas pipeline

[0045] 61 Shell

[0046] 62 inner tank

[0047] 63 Base

[0048] 64 Connecting rod

[0049] 65 Steering gear DETAILED DESCRIPTION

[0050] The technical scheme of the present invention is described in detail below. The following implementation modes are implemented on the premise of the technical scheme of the present invention, and a detailed implementation process is given. However, the protection scope of the present invention is not limited to the following implementation modes. The structures or experimental methods of specific conditions are not specified in the following implementation modes, and generally conventional conditions are followed.

[0051] The present invention provides a preparation and delivery system for a homogeneous catalyst. Homogeneous catalysis refers to a catalytic reaction system in which the catalyst is indistinguishable from the reaction medium and forms a uniform phase with other components in the medium. Homogeneous catalysis is commonly used in liquid phase reactions. In the materials undergoing the catalytic reaction, whether it is the reaction raw materials or the catalyst, they are dissolved in the reaction medium and dispersed in the form of independent molecules. In olefin polymerization reactions, homogeneous catalysts are key elements for releasing the activity of the polymerization reaction, and the preparation process and the design of the catalyst delivery system are also particularly important. Taking metallocene catalysts as an example, in olefin polymerization reactions, metallocene complexes are used as the main catalyst, and alkyl aluminum or methylaluminoxane is used as the co-catalyst. During the preparation process, the co-catalyst removes impurities such as water and oxygen from the system, and captures heteroatom impurities in the polymerization system that are easy to poison the catalytic active center, so as to alkylate the metallocene complex and stimulate the catalytic reaction activity.

[0052] The preparation and delivery system of the homogeneous catalyst provided by the present invention can be found in Figure 1 The preparation and delivery system of homogeneous catalyst is a closed system, including:

[0053] The main catalyst calibration tank 6 is provided with a main catalyst inlet;

[0054] The catalyst promoter calibration tank 16 is provided with a catalyst promoter inlet;

[0055] The catalyst activation tank 7 is connected to the main catalyst calibration tank 6 and the auxiliary catalyst calibration tank 16 respectively;

[0056] The reaction kettle 10 is connected to the catalyst activation tank 7:

[0057] Among them, the structures of the main catalyst calibration tank 6 and the auxiliary catalyst calibration tank 16 can be the same or different, at least one of which includes an outer shell and an inner tank, a power device and a control device are arranged at the bottom of the outer shell, a calibration device is arranged inside the inner tank, the control device is electrically connected to the calibration device and the power device, and confirms whether the inner tank is in a horizontal position through the calibration device; when the inner tank is in a non-horizontal position, the control device controls the power device to restore the inner tank to a horizontal position.

[0058] In one embodiment, the main catalyst calibration tank 6 and the auxiliary catalyst calibration tank 16 of the present invention each include an outer shell and an inner tank. Figure 2As shown, a base 63 is provided at the bottom of the outer shell 61, a power device and a control device are provided in the base 63, and an inner tank 62 is provided on the base 63 at the bottom of the outer shell to support and space a certain distance between the outer shell 61 and the inner tank 62. A calibration device is provided inside the inner tank 62, and the control device is electrically connected to the calibration device and the power device, and confirms whether the inner tank is in a horizontal position through the calibration device; when the inner tank is in a non-horizontal position, the control device controls the power device to restore the inner tank to a horizontal position.

[0059] The present invention provides a main catalyst calibration tank and a co-catalyst calibration tank structure, so that the main catalyst and the co-catalyst can be accurately measured, thereby stabilizing the composition of the obtained catalyst and reducing the influence of the catalyst on the product.

[0060] In one embodiment, the main / co-catalyst calibration tank of the present invention is also provided with a liquid level gauge. The outer shell 61 of the main / co-catalyst calibration tank is a thickened outer shell, the power device arranged at the bottom of the outer shell is an electronic control unit, and the control device is a control chip. The inner wall of the inner tank 62 is a smooth tank wall, and the calibration device is a level meter and / or a laser calibrator. The present invention performs intelligent calibration through a calibration device, that is, confirms whether the inner tank is in a horizontal position, and controls the power device using a control device. When the calibration device detects that the inner tank is not in a horizontal position, the power device operates the inner tank under the command of the control device to restore the inner tank to a horizontal position. In one embodiment, the power device is connected to the connecting rod 64 to drive the steering gear 65 to make the inner tank 62 tilt forward and backward. The power device controls the tilting direction of the inner tank through the steering gear 65 and the connecting rod 64 fixed on the steering gear to meet the calibration needs. Specifically, for example, the steering gear and the fixed connecting rod, the movable connecting rod are rotated and telescoped to complete the horizontal calibration work at different positions. In one embodiment, the calibration device is electrically connected to the control device through the steering gear 65.

[0061] In one embodiment, the preparation and delivery system of the homogeneous catalyst of the present invention further includes a solvent pipeline, which is connected to other devices of the preparation and delivery system of the homogeneous catalyst to clean other devices and pipelines. For example, it includes a solvent pipeline 1 and a solvent pipeline 12, and the solvent optical path 1 is connected to the main catalyst calibration tank 6, the catalyst activation tank 7 and the reactor 10. The solvent pipeline 12 is connected to the co-catalyst calibration tank 16, the catalyst activation tank 7 and the reactor 10.

[0062] In another embodiment, the solvent is selected from a mixture of one or more of n-butane, isobutane, n-pentane, isopentane, n-hexane, cyclohexane, n-heptane, n-octane, n-nonane and n-decane; preferably cyclohexane, isopentane and n-hexane; more preferably cyclohexane.

[0063] In one embodiment, the preparation and delivery system of the homogeneous catalyst of the present invention further includes a gas pipeline 17, which is connected to other devices of the preparation and delivery system of the homogeneous catalyst to purge the cleaning solvent remaining in other devices and pipelines. For example, the gas pipeline 17 is connected to the main catalyst calibration tank 6, the co-catalyst calibration tank 16, the catalyst activation tank 7 and the reactor 10.

[0064] In one embodiment, the preparation and delivery system of the homogeneous catalyst of the present invention further includes a main catalyst storage tank 3 and a co-catalyst storage tank 14 .

[0065] A stirring device 4 is provided in the main catalyst storage tank 3, and the stirring device 4 is, for example, a stirring paddle, which is stirred under the drive of a stirring motor. Paddle-type stirring paddles, turbine-type stirring paddles, and anchor-type stirring paddles can be selected, preferably turbine-type stirring paddles. The main catalyst storage tank 3 is connected to a main catalyst pipeline 2, and the main catalyst is transported to the main catalyst storage tank 3 through the main catalyst pipeline 2. In one embodiment, the main catalyst pipeline 2 and the solvent pipeline 1 are arranged in the middle of the main catalyst storage tank 3, and the gas pipeline 17 is arranged above the middle of the main catalyst storage tank 3, and the height-to-diameter ratio of the main catalyst storage tank 3 is 1-3, preferably 1.2-1.5. The main catalyst storage tank 3 is connected to the main catalyst calibration tank 6 to transport the main catalyst in the main catalyst storage tank 3 to the main catalyst calibration tank 6. In another embodiment, a main catalyst delivery pump 5 is also provided on the connecting pipeline between the main catalyst storage tank 3 and the main catalyst calibration tank 6 to assist in transporting the main catalyst. Preferably, the main catalyst delivery pump adopts a screw pump to avoid the main catalyst slurry blocking the pipeline.

[0066] A stirring device 13 is provided in the promoter storage tank 14, and the stirring device 13 is, for example, a stirring paddle, which is stirred under the drive of a stirring motor. A paddle stirring paddle, a turbine stirring paddle, and an anchor stirring paddle can be selected, preferably a turbine stirring paddle. The promoter storage tank 14 is connected to a promoter pipeline 11, and the promoter is transported to the promoter storage tank 14 through the promoter pipeline 11. In one embodiment, the promoter pipeline 11 and the solvent pipeline 12 are arranged in the middle of the promoter storage tank 14, and the gas pipeline 17 is arranged in the middle or above the middle of the promoter storage tank 14, and the height-to-diameter ratio of the promoter storage tank 14 is 2-4, preferably 1.2-1.5. The promoter storage tank 14 is connected to the promoter calibration tank 16 to transport the promoter in the promoter storage tank 14 to the promoter calibration tank 16. In another embodiment, a promoter delivery pump 15 is also provided on the connecting pipeline between the promoter storage tank 14 and the promoter calibration tank 16 to assist in transporting the promoter. Preferably, the co-catalyst delivery pump is a centrifugal pump.

[0067] In one embodiment, the catalyst activation tank 7 is provided with a stirring device 8, such as a stirring paddle, which stirs the catalyst under the drive of a stirring motor. The height-to-diameter ratio of the catalyst activation tank is 1-3.

[0068] In another embodiment, a temperature monitoring device, such as a temperature sensor, is further provided in the catalyst activation tank 7 of the present invention. Under the action of the stirring device 8, the temperature monitoring device can monitor the temperature in the catalyst activation tank 7 in real time and accurately, so that the temperature in the activation tank body is stabilized within a preset range, which is beneficial to improving the catalyst activation treatment effect.

[0069] In one embodiment, the reactor 10 of the present invention is provided with a stirring device 9, such as a stirring paddle, which stirs the reactor 10 driven by a stirring motor. In another embodiment, the reactor 10 is provided with a temperature monitoring device. The reactor 10 is provided with a circulation system for heat exchange.

[0070] In one embodiment, the main catalyst pipeline 2 and the auxiliary catalyst pipeline 11 of the present invention are provided with flow regulating valves and flow meters, and the opening of the flow regulating valves can be controlled according to the flow of the flow meters.

[0071] The present invention does not particularly limit the main catalyst and the co-catalyst, as long as they are homogeneous catalysts. The main catalyst can be appropriately selected according to the type of comonomer and the specific performance index of the final polymer, for example, a metallocene catalyst, more for example, a zirconocene catalyst. The co-catalyst can be selected from alkyl aluminum or alkyl aluminoxane, for example, diethyl aluminum, triethyl aluminum, methyl aluminoxane, triisobutyl aluminum, preferably methyl aluminoxane.

[0072] The method for preparing a homogeneous catalyst using the preparation and delivery system of the homogeneous catalyst of the present invention is briefly described as follows:

[0073] First, the system is purged with low-pressure gas (such as nitrogen) through the gas pipeline 17 to press out the air in the pipeline and each device, and the solvent is introduced through the solvent pipeline 1 to flush the entire preparation system. The flow rate is set to 500 ml / min, for example, and introduced into the reactor, heated, and the reactor is cleaned. When the temperature rises to 70-80° C., the stirring device in the reactor is turned on and the rotation frequency is set to 5-10 Hz. The solvent is flushed in the system pipeline for 10-20 minutes.

[0074] After flushing, continue to pass low-pressure gas to blow out the remaining solvent in the pipeline and maintain a slight positive pressure in the pipeline.

[0075] The main catalyst and the co-catalyst are slowly introduced into the main catalyst storage tank 3 and the co-catalyst storage tank 14 through the main catalyst pipeline 2 and the co-catalyst pipeline 11 respectively, and when the two catalysts are introduced to the storage tank liquid level of 20%, the stirring device 4 of the main catalyst storage tank and the stirring device 13 of the co-catalyst storage tank are slowly turned on, and the stirring frequency is set to 3-5HZ.

[0076] When the main catalyst / co-catalyst respectively enters the main catalyst / co-catalyst storage tank to 80% of the liquid level, stop, leaving 20% ​​of the gas phase space, turn off the stirring, and stop the catalyst feeding.

[0077] Open the main / co-catalyst storage tank valves, and the main / co-catalyst slurry enters the main catalyst calibration tank 6 and the co-catalyst calibration tank 16 respectively through the main catalyst delivery pump 5 and the co-catalyst delivery pump 15, and the feed flow rate is set to 100m / min.

[0078] Pay attention to injecting the main / co-catalyst to calibrate the tank liquid level, at the same time turn on the flipping frequency of the flipping device to 2-5Hz, the flipping plate begins to flip, and the catalyst continues to be injected. At the same time, observe the temperature monitoring device to pay attention to the temperature in the calibration tank in real time. The injection of the main / co-catalyst is stopped when 90% of the injection is respectively made, leaving some gas phase space.

[0079] After the temperature of the temperature monitoring device in the catalyst activation tank 7 is stabilized, the main / co-catalyst flow regulating valves are opened respectively, with an opening of 50%, and the catalyst liquid slowly flows into the catalyst activation tank 7, and the main / co-catalyst is fully mixed. When the liquid level in the tank reaches 40%, the stirring device 8 in the catalyst activation tank 7 is turned on, and the stirring frequency is set to 3-5Hz. The main / co-catalyst liquid level in the activation tank is brought to 80%.

[0080] The reactor 10 is repeatedly replaced with low-pressure nitrogen for 3-10 times, and the comonomer raw materials required for the reaction are injected. At the same time, the temperature is slowly increased, stirring is started, and the speed is set to 2000r / min.

[0081] When the temperature of the reactor rises to 90-100°C, open the feed valve, control the catalyst flow rate with the infusion pump, and set the catalyst feed rate to 3ml / min.

[0082] Observe the temperature in the reactor in real time. When the temperature rises slowly to about 5°C / min, the polymerization reaction begins. If the heating rate is too fast, reduce the catalyst feed rate to 2 ml / min.

[0083] Of course, the present invention may have many other embodiments. Without departing from the spirit and essence of the present invention, technicians familiar with the field may make various corresponding changes and deformations based on the present invention, but these corresponding changes and deformations should all fall within the scope of protection of the claims of the present invention.

Claims

1. A homogeneous catalyst preparation and delivery system, characterized in that: The preparation and delivery system of the homogeneous catalyst is a closed system, comprising: A main catalyst calibration tank is provided with a main catalyst inlet; A catalyst promoter calibration tank is provided with a catalyst promoter inlet; The catalyst activation tank is connected to the main catalyst calibration tank and the auxiliary catalyst calibration tank respectively; A reaction kettle, connected to the catalyst activation tank; Among them, at least one of the main catalyst calibration tank and the auxiliary catalyst calibration tank includes an outer shell and an inner tank, a power device and a control device are arranged at the bottom of the outer shell, a calibration device is arranged inside the inner tank, the control device is electrically connected to the calibration device and the power device, and confirms whether the inner tank is in a horizontal position through the calibration device; when the inner tank is in a non-horizontal position, the control device controls the power device to restore the inner tank to a horizontal position.

2. The homogeneous catalyst preparation and delivery system according to claim 1, characterized in that: It also includes a solvent pipeline, which is connected to the main catalyst calibration tank, the co-catalyst calibration tank, the catalyst activation tank and the reaction kettle.

3. The homogeneous catalyst preparation and delivery system according to claim 1, characterized in that: It also includes a gas pipeline, which is connected to the main catalyst calibration tank, the auxiliary catalyst calibration tank, the catalyst activation tank and the reactor.

4. The homogeneous catalyst preparation and delivery system according to claim 1, characterized in that: It also includes a main catalyst storage tank and an auxiliary catalyst storage tank, each of which is provided with a stirring device; the main catalyst storage tank is connected to the main catalyst calibration tank, and the auxiliary catalyst storage tank is connected to the auxiliary catalyst calibration tank.

5. The homogeneous catalyst preparation and delivery system according to claim 1, characterized in that: The calibration device is a laser calibrator and / or a level; the inner tank is also provided with a liquid level indicator.

6. The homogeneous catalyst preparation and delivery system according to claim 1, characterized in that: The catalyst activation tank has a height-to-diameter ratio of 1-3.

7. The homogeneous catalyst preparation and delivery system according to claim 1, characterized in that: The main catalyst is a metallocene catalyst, and the co-catalyst is an alkyl aluminum or an alkyl aluminum oxide.

8. The homogeneous catalyst preparation and delivery system according to claim 1, characterized in that: A stirring device and a temperature monitoring device are arranged inside the reactor.

9. The homogeneous catalyst preparation and delivery system according to claim 4, characterized in that: It also includes a main catalyst delivery pump and a co-catalyst delivery pump. The main catalyst delivery pump is arranged on the pipeline between the main catalyst storage tank and the main catalyst calibration tank, and the co-catalyst delivery pump is arranged on the pipeline between the co-catalyst storage tank and the co-catalyst calibration tank.

10. The homogeneous catalyst preparation and delivery system according to claim 2, characterized in that: The solvent that can be introduced into the solvent pipeline is selected from a mixture of one or more of n-butane, isobutane, n-pentane, isopentane, n-hexane, cyclohexane, n-heptane, n-octane, n-nonane and n-decane.

Images